MLis MLB-G4202, MLB-G420, MLB-G4201 User Manual

MLB-G420X

MLB-G4201
Ethernet to 2G/3G Terminal
MLB-G4202
Ethernet to LTE Terminal

 USER MANUAL

Information provided by Schmidt & Co., (HK) Ltd, (herein known as ‘the company’), is believed to be

accurate and reliable. However, the company assumes no responsibility for its use, nor any infringement
of patents or other rights of third parties, which may result from its use. No license is granted by
implication or otherwise under any patent rights of the company other than for circuitry embodied in the

company’s products. The company reserves the right to change the circuitry and specifications at any time

without notice. This document is subject to change without notice.

No part of this document may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including but not limited to photocopying, recording, transmitting via fax and/or modem
devices, scanning, and/or information storage and retrieval systems for any purpose without the
expressed written consent of the company.

WARNING: The MLiS GSM wireless terminal is a RF product intended for interfacing and operating with a
host device. Local relevant RF regulations such as allowed frequencies and usage in commercial flights
must be observed. Safety instructions must be included in the manuals of the host device. Schmidt & Co.,
(HK) Ltd assumes NO liability for customers, who fail to comply with these precautions.

Service and Support

[e-mail]

Download Information

http://www.schmidtm2m.com/en/support_download.php

CONTENTS

1 INTRODUCTION .................................................................................................................................................. 6

1.1 Description ................................................................................................................................................ 6

1.2 Highlights .................................................................................................................................................. 6

1.3 Functional Block diagram ........................................................................................................................ 11

1.4 Precautions ............................................................................................................................................. 12

2 MECHANICAL DESCRIPTION ............................................................................................................................. 13

2.1 Overview ................................................................................................................................................. 13

2.2 Dimensions.............................................................................................................................................. 13

3 ELECTRICAL INTERFACE DESCRIPTIONS ............................................................................................................ 15

3.1 Right side view (DB9 connector) ............................................................................................................. 15

3.2 Left side view (DC Jack & Industry connector)........................................................................................ 16

3.3 Frond view (Antenna & LED) ................................................................................................................... 18

3.4 SIM card holder………………………………………………………………………………………………………………………………….20

3.5 Getting Started…………………………………………………………………………………………………………………………………..23

4 SW Installation..................................................................................................................................................23

4.1 Web Console ........................................................................................................................................... 23

4.2 Overview ................................................................................................................................................. 24

4.2.1 System Info ......................................................................................................................................... 24

4.2.2 LAN Info: ............................................................................................................................................. 25

4.2.3 Cellular Info ........................................................................................................................................ 25

4.3 Basic Settings .......................................................................................................................................... 26

4.3.1 Network Settings ................................................................................................................................ 26

4.3.2 Cellular WAN Settings ......................................................................................................................... 27

4.3.3 DHCP Server ........................................................................................................................................ 29

4.3.4 Port Forwarding .................................................................................................................................. 31

4.4 Advanced Settings ................................................................................................................................... 33

4.4.1 Com port setting ................................................................................................................................. 33

SNMP agent

4.4.2 IPSec-base VPN Setting ....................................................................................................................... 35

4.4.3 OpenVPN

4.5 Maintenance ........................................................................................................................................... 62

4.5.1 Ping ..................................................................................................................................................... 63

4.5.2 AT command ....................................................................................................................................... 65

4.5.3 Password............................................................................................................................................. 66

4.6 Update FW .............................................................................................................................................. 69

4.7 Reset to Default ...................................................................................................................................... 71

4.8 Status ...................................................................................................................................................... 72

4.8.1 IO/Relay Status ................................................................................................................................... 72

4.8.2 IPSec Log/OpenVPN Log/Syslog……………………………………………………………………………………………………..75

4.9 Save ......................................................................................................................................................... 75

5 OPERATING NOTE ............................................................................................................................................. 76

5.1 Power on the Modem ............................................................................................................................. 76

5.2 Reset to default ....................................................................................................................................... 76

5.3 External input x2 ..................................................................................................................................... 76

5.4 External Relay x1 ..................................................................................................................................... 76

5.5 DB9 Connector ........................................................................................................................................ 76

5.6 Install SIM card........................................................................................................................................ 76

6 MLiS Cellular Control Protocol (MCCP) ............................................................................................................ 77

SALES CONTACT ........................................................................................................................................................ 87

7 ORDERING INFORMATION ............................................................................................................................... 88

List of Figures

Figure 1: Functional Block Diagram for MLB-G420X ................................................................................................ 11

Figure 2: Chassis Dimension for MLB-G420X ........................................................................................................... 13

Figure 3:RS232/RS422/RS485 for MLB-G420X ......................................................................................................... 15

Figure 4: DC and Industry connector for MLB-G420X .............................................................................................. 16

Figure 5: Antenna Connector for MLB-G420X.......................................................................................................... 18

Figure 6: SIM Card Holder for MLB-G420X ............................................................................................................... 20

List of Tables

Table 1: Chassis Dimensions and Mechanical Description for MLB-G420X ............................................................. 14

Table 2: DB9 pins define for MLB-G420X ................................................................................................................. 15

Table 3: Interfaces and Indicators Description of MLB-G420X ................................................................................ 16

Table 4: LED functions of MLB-G420X ...................................................................................................................... 19

1 INTRODUCTION

1.1 Description

The MLiS MLB-G4201 is a Ethernet to 3G wireless terminal designed for RJ45 communication over TCP/IP via any
readily available 3G carrier network.

Moreover, the MLiS MLB-G4202 is an Ethernet to LTE wireless terminal designed for RJ45 communication over
TCP/IP via any readily available LTE carrier network.

Overall, they are more cost and time effective to use remote solutions to combine Machine to Machine over
diverse locations without having first to establish and invest in a huge complex network.

The MLB-G420X wireless terminal offer Ethernet to Cellular communication. LEDs are used to indicate the status of
the wireless terminal.

The MLB-G420X wireless terminal can be used to provide a wireless communication link to many applications,
including metering, fleet and asset management, vending, security and alarm monitoring, e-maintenance and other
telemetry applications.

1.2 Highlights

Interface

• MLB-G4201: 1 x Cellular Antenna Connectors SMA (female)

• MLB-G4202: 2 x Cellular Antenna Connectors, SMA (female)

• DC jack/terminal block Connector for power / DB9 connector ( male ) / 2 x DI

• DB9 connector (female)

• 2 * Ethernet: 10/100Mbps, RJ45 connector, Auto MDI/MDIX

• SMA Female Connector (GSM antenna connector)

• 2 * SIM card reader

• 1 * relay

• 2 * I/O pins

General Features

MLB-G4201

General Features

Frequency Range

UMTS (WCDMA/FDD)
800/850/900/1900/2100 MHz
GSM
800/900/1800/1900 MHz

Protocol Stack

TCP/IP, UDP, HTTP, HTTPs, FTP, DHCP,
DDNS, ARP, Telnet, SMTP, SNMP

Power Supply Input

9~48VDC

Power Consumption

Working mode: < 330mA

Humidity

5~95% (non-condensing)

Operating Temperature

-40~+75°C

Switch Off Protection

+90°C

Dimension
(L) x (W) x (H)

122x88x48mm
(excluding connectors)

Weight

420g (without antenna)

Casing Material

Metal

Data Transmission

GPRS

Multi-slot class 12,
mobile station class B

EDGE

Multi-slot class 12

CSD

-9.6 Kbps, non-transparent, V.110

SMS

MT, MO, Cell Broadcast, Text and PDU mode

Operating Mode

Transparent
TCP Server/TCP client /UDP
SMS/AT command

Relay

1 output with current carrying capacity of 2A @
40VDC

Digital Inputs

2 electrically isolated inputs:
+13~+30V for state “1” (on)
+3~-30 V for state “0” (off)

ESD Protection

15 KV

Event Trigger

GPRS/Reboot/IO/Relay

NAT

Yes

Port Forwarding

Yes

IPSec

Yes

OpenVPN

Yes

MCCP/MCCU

Yes
API：MLiS Cellular Control Protocol ( = MCCP)
Utility：MLiS Cellular Configuration Utility ( = MCCU)

Interfaces

RF Antenna Socket

50 Ohm SMA

Power Connector

DC jack connector/ Terminal Block

SIM Card Num

2

SIM Card Slot

Flip-up type

Ethernet Interface

2 x RJ45 connector for 10/100M

Serial Interface

DB9 connector (male)

LED

8 x Working Status Indicator
3 x Network Status Indicator

Reset

HW Reset

Approval

Certification

EMC

EN55022/24
FCC Part 15B

EMS

IEC61000-4-2
IEC61000-4-3
IEC61000-4-4
IEC61000-4-5
IEC61000-4-6

RF

EN301908-1

Safety

EN60950-1

NCC

MLB-G4202

General Features

Frequency Range

LTE - 2100/1800/2600/900/800 MHz
UMTS/HSPA - 2100/1900/850/800/900
MHz

WCMDA

2100MHz, 1900MHz, 850MHz, 900MHz

Protocol Stack

TCP/IP, UDP, HTTP, HTTPs, FTP, ICMP,
DHCP, DDNS, ARP, SNMP, Telnet

Power Supply Input

9~48VDC

Power Consumption

Working mode: < 330mA

Humidity

5~95% (non-condensing)

Operating Temperature

-40~+75°C

Switch Off Protection

+90°C

Dimension
(L) x (W) x (H)

121x88x48mm
(excluding connectors)

Weight

425g (without antenna)

Casing Material

Metal

Data Transmission

Peak Download Rate

100 Mbps

Peak Upload Rate

50 Mbps

Operating mode

Transparent
TCP server/TCP client/UDP
SMS/AT command

Relay

1 output with current carrying capacity of 1 A @
40VDC

Digital Inputs

2 electrically isolated inputs:
+13~+30V for state “1” (on)
+3~-30V for state “0” (off)

ESD Protection

15 KV

NAT

Yes

Port Forwarding

Yes

IPSec

Yes

OpenVPN

Yes

Event Trigger

GPRS/Reboot/IO/Relay

MCCP/MCCU

Yes
API：MLiS Cellular Control Protocol ( = MCCP)
Utility：MLiS Cellular Configuration Utility ( = MCCU)

Interfaces

RF Antenna Socket

50 Ohm SMA

Power Connector

DC jack connector/ Terminal Block

SIM Card Num

2

SIM Card Slot

Flip-up type

Ethernet Interface

2 x RJ45 connector for 10/100M

Serial Interface

DB9 connector (male)

LED

8 x Working Status Indicator
3 x Network Status Indicator

Reset

HW reset

Approval

Certification

EMC

EN55022/24
FCC Part 15B

EMS

IEC61000-4-2
IEC61000-4-3
IEC61000-4-4
IEC61000-4-5
IEC61000-4-6

RF

EN301908-1

Safety

EN60950-1

NCC

1.3 Functional Block Diagram

Figure 1: Functional Block Diagram for MLB-G420X

The MLB-G420X consists of a fully certified (CE /NCC approved) GSM/GPRS engine, SIM card holder and
power regulator.
The wireless terminal is supplied with power via the DC jack and terminal block. The remaining RJ45
connector is used for data communications.
The SMA female connector provides the air interface to an external 50 ohm antenna specified for the
correct frequency band.

1.4 Precautions

The MLB-G420X wireless terminal is designed for indoor use only. For outdoor use, it has to be integrated
into a weatherproof enclosure. Do not exceed the environmental and electrical limits as specified in the
user manual.

2 MECHANICAL DESCRIPTION

2.1 Overview

The pictures below show the mechanical design of the wireless terminal along with the positions of the different
connectors.

2.2 Dimensions

Figure 2-1: Chassis Dimension for MLB-G4201

Figure 3-2: Chassis Dimension for MLB-G4202

S/N

Parameter

Value

1

Height (H)

48mm

2

Length (L)

121mm

3

Width (W)

88.0mm

4

Weight

420g

5

Chassis Material

Metal

Table 1: Chassis Dimensions and Mechanical Description for MLB-G420X

3 ELECTRICAL INTERFACE DESCRIPTIONS

3.1 Buttom side view (DB9 connector)

Figure 4:RS232/RS422/RS485 for MLB-G420X

The table below defines the RS-232/422/485 pin configuration on the wireless terminal.

Table 2: DB9 Pins Definition for MLB-G420X

3.2 Top side view (DC Jack & Power Terminal block)

Figure 5: DC and Terminal Block for MLB-G420X

For power redundancy purpose, it is recommended to connect both DC jack and the wire power line to
the corresponding power pinouts of terminal block to a DC power sources.

The interfaces description and pinouts definition for MLB-G420X are as follows:

Name

Description

Function

DC

DC

Input Power:+9V~+48V

Terminal

Block

PWR(V+, V-)

• Input Power:+9V~+48V

• Pin #1 is V+

• Pin #2 is V-

• When use DC for input, the output power of TB is same as input

power

Relay

External Relay:
Load Voltage: 40V max
Load Current: 2.0A max

DI1(I1, COM_1)

Pin #5 is +

Pin #6 is -

• I1: external signal +12V~+48V

• COM_1:common grand

• Pin #5 is +

• Pin #6 is -

DI2(I2, COM_2)

Pin #7 is +

Pin #8 is -

• I2:external signal, +12V~+48V

• COM_2: comman grand

• Pin #7 is +

• Pin #8 is -

Reset

Reset

• 1-click for 1 second to reboot MLB-G420X.

• Long press 30 seconds to reset MLB-G420X to default.

Table 3: Interfaces description and Pinouts definition of MLB-G420X

Note: The reset button is located on the top panel of MLB-G420X. You can reboot it to

factory default settings by pressing the RESET button with a pointed object such as an un

folded paper clip.
System reboot: Hold the RESET button down for 1 second and then release
Reset to factory default: Hold the reset button down for 30 seconds while the READY LED and

SIM LED go off until READY LED starts bliking green. Release the button to reset the

MLB-G420X.

3.3 Frond view (Antenna & LED)

Figure 6-1: Antenna Connector for MLB-G4201

Figure 7-2: Antenna Connectors for MLB-G4202

Note: For the model of MLB-G4202, it is strongly recommended to install both antennas to gain

the better quality of cellular signal. For a reminder, it is mandatory to install ANT1; if you only

install ANT2, there would be no cellular signal received to establish the traffic communication.

For optimum RF performance, the MLiS wireless terminal has to be connected to an external RF antenna
matched to 50ohms. Please use a SMA Male connection for the wireless terminal.

The functions of LED are indicated on the table below.

LED

Color

State

Description

PWR1 (DC)

Green

On

Power is being supplied from power input 1.

PWR2
(Terminal Block)

Green

On

Power is being supplied from power input 2.

READY

Green

On

System startup is complete and the system is operating with IP
address obtained.

Blink

Device has been located.

Off

Power is off, or the system is booting up.

FAULT

Red

On

System configuration error or a relay event has occurred.

Blink

IP address conflict.

Off

Power is off, or there is no error condition.

SINGNAL
(3LEDs)

Green

On

Number of LEDs to indicate cellular signal level when registered
to a base station.
Signal LED 1: 0 < RSSI ≤ 12
Signal LED 2: 12 < RSSI ≤ 21
Signal LED 3: 21 < RSSI ≤ 31

SIM1

Amber

On/Off

SIM 1 is active or inactive.

Blink

SIM 1 is not inserted or PIN code is incorrect.

SIM2

Amber

On/Off

SIM 2 is active or inactive.

Blink

SIM 2 is not inserted or PIN code is incorrect.

MLB-G4202

4G
Amber

On

Registered to a base station with cellular connection in LTE
mode

3G

Amber

On

Registered to a base station with cellular connection in UMTS
or HSPA mode

MLB-G4201

3G

Amber

On

Registered to a base station with cellular connection in UMTS
or HSPA mode

2G

Amber

On

Registered to a base station with cellular connection in GPRS or
EDGE mode

Table 4: LED Functions of MLB-G420X

3.4 Hardware Installation

In the bottom, the MLB-G420X wireless terminal is provided with a SIM card reader designed for 1.8V and
3V SIM cards. It is the flip-up type which can be locked. It can be accessed through removing the cover as
shown below.

Figure 8: SIM Card Holder for MLB-G420X

➢ Be sure to power off the modem when user replaces the SIM card. Otherwise it may cause

damage to the equipment.

The MLB-G420X fully operates when inserting a SIM card. Some MLB-G420X functionality may be lost if
user trys to operate the wireless terminal without a SIM card.

Installing a SIM Card

The SIM card slots are located inside the MLB-G420X’s housing. To install a SIM card, please follow the
steps listed below:

1. Turn off the MLB-G420X.

2. Remove the screw to open the SIM card slot cover.

3. Install a SIM card into a SIM card flip-up holder.

 For SIM 1, orient the gold contacts facing down and the cut-off edge to the left.
 For SIM 2, orient the gold contacts facing up and the cut-off edge to the left.

4. Install the screw to secure the SIM card slot cover.

DIN-Rail Mounting

The aluminum DIN-Rail attachment plate should already be fixed to the back panel of the MLB-G420X
when you take it out of the box.

1. Insert the top of the DIN-Rail stiff metal spring into the slot.

2. The top of stiff metal spring of the DIN-Rail mounting kit unit will snap into the Din rail rack as shown in
the following illustration.

To remove MLB-G420X from the DIN-Rail, simply reverse Steps 1 and 2.

3.5 Web Console

Power on MLB-G420X and use Ethernet Cat cable to configure MLB-G420X.
Web Console management ~
Factory default IP: 10.0.10.1
Subnet mask: 255.255.255.0

Please set PC & MLB-G420X into same subnetwork. The Default IP of MLB-G420X is 10.0.10.1/24. Please
set up your PC with the same network segment, such as 10.0.10.2/24. So you can use browser to access
the web console of MLB-G420X for further configuration or management. Please configure the gateway
such as default IP address 10.0.10.1/24 of MLB-G420X on your PC if you wish to route the traffic from
LAN to Cellular WAN.

Please enter username and password as below to enter the web console:
Username: admin
Password: 1234

Note:

1. If you leave the web-based console management interface unused for 5 minutes, you would be
logged out and need to re-enter from this log-in page.

2. It is recommended to use the browser of Chrome v54, Firefox v49 or IE v11 above for web
console management.

3.6 Overview

This page displays the system information of MLB-G420X.

3.6.1 System Info

Item

Description

Model name

Display the model name

Device name

Display the device name

Serial No

Display the serial number

System up time

Display system run times

Firmware version

Display the Firmware version

Firmware build time

Display the Firmware build time

3.6.2 LAN Info

Item

Description

Device MAC address

Display physical address

IP address

Display the IP address

Subnet Mask

Display the subnet mask

3.6.3 Cellular Info

Item

Description

Cellular RSSI

Signal

Cellular WAN IP address

Display the WAN IP address

Cellular mode

Display the cellular mode

IMEI

IMSI

3.7 Basic Settings
The Basic Settings group includes the most commonly used settings required by administrators to
maintain and control the MLB-G420X.

3.7.1 Network Settings

You can provide the Device Name and change the Lan settings as desired.
Please click “Save” if you change the configuration and also wish to update the settings on this device.

Save

.

Item

Description

IP Address

Enter the unique IP address for the MLB-G420X

Subnet mask

Enter the subnet mask to specify the type of network.

Primary DNS server

Enter the IP address of the primary DNS server.
After you specify a DNS server, you can access a web
site by entering its URL instead of the IP address.

Secondary DNS server

Enter the IP address of the secondary DNS server.

Apply

Click to save all settings.

3.7.2

Item

Description

IP Address

Enter the unique IP address for the MLB-G420X

Subnet mask

Enter the subnet mask to specify the type of network

Primary DNS server

Enter the IP address of the primary DNS server.
After you specify a DNS server, you can access a web
site by entering its URL instead of the IP address.

Secondary DNS Server

Enter the IP address of the secondary DNS server.

Apply & Save

1.Click to Apply all settings.

2.Go to “Save” then click on the save button if you
wish to update the configuration settings.

Save

3.7.3 Cellular WAN Settings

MLB-G420X supports Dual-SIM for cellular connection redundancy.

Redundant:

With Disable, SIM 1 is the only activate SIM interface;
With Enable, the selected SIM # interface in the priority SIM menu would be the main one. The other SIM
interface would be the backup one.

Priority SIM:

Set main SIM & backup SIM. .

Register to Network Timeout:

Default value is 5 mins (1~100).
The registration process has to be completed to a base station before the timeout specified in the Register
to network timeout field. For instance; if MLB-G420X’s 1st priority SIM failed to register to the base station
within that time period, it changes to 2nd priority SIM.

Data Session Retry Count:

Sometimes the cellular connection is terminated based on your ISP; in such scenarios, MLB-G420X’s
main SIM retries to reconnect the number of times specified in the data Session Retry field. If still failed, it
will change to the backup SIM interface.
Default Value is 2 (0~9999, 9999 means unlimited)

Terminated Redundant:

Under the conditions of either Register to network failed or Data session retry failed would trigger the SIM
redundant function, the redundant times such as changing from SIM1 to SIM2 or from SIM2 to SIM1 varies
from 1 to 9999 (9999 means unlimited). After the number of redundant changes reached the specified
times such as the default value is 10 times, the redundant function would be stopped.

Item

Description

APN

Access Point Name

PIN

Personal Identification Number

Authentication Protocol

Select authentication protocol if your service provider
provided

Username

Enter the username for authentication if your service
provider provided

Password

Enter the username for authentication if your service
provider provided

Apply & Save

1.Click to Apply all settings.

2.Go to “Save” then click on the save button if you
wish to update the configuration settings.

Save

Item

Description

APN

Access point name

PIN

Personal identification number

Authentication Protocol

Select authentication protocol if your service provider
provided

Username

Enter the username for authentication if your service
provider provided

Password

Enter the username for authentication if your service
provider provided

Apply & Save

1.Click to Apply all settings.

2.Go to “Save” then click on the save button if you
wish to update the configuration settings.

Save

3.7.4 DHCP Server

The Dynamic Host Configuration Protocol (DHCP) save network administrators time and effort on
manually configuring IP addresses of the connected End devices thru automatically IP addresses
assignment. With DHCP Server implementation of MLB-G420X, the connected DHCP supported client
devices can successfully obtain the dynamic IP addresses assigned from the MLB-G420X (DHCP server) via
Ethernet ports network connection.

Item

Description

DHCP server

Select “Enable” or “Disable” by drop-down list

Default gateway

Set default gateway

Subnet mask

Set subnet mask

Primary DNS server

Set IP address of the primary DNS server.

Second DNS server

Set IP address of the secondary DNS server.

Start IP address

Enter the starting IP address in the IP address pool.

Maximum number of
users

Enter the number (1~999) of IP address to assign to
DHCP clients.

Client lease time

Enter the lease time (2~14400 minutes) for an
assigned IP address.
The IP address expired after the lease time.

With Static DHCP mapping function, you can manually specify the desired IP address to the specific
connected network device distinguished by the MAC address.

The user can check if the specific MAC network device gets the corresponding IP address successfully in
the windows command.

Item

Description

Static DHCP mapping

1. Input MAC address and assign IP address.

2. Enable the mapping setting.

3. Click Apply to save settings.

Apply & Save

1.Click to Apply all settings.

2.Go to “Save” then click on the save button if you
wish to update the configuration settings.

Save

3.7.5 Port Forwarding

The function of port forwarding on the MLB-G420X allows you to redirect traffic from a
remote host on the WAN to a specific port on a LAN network device and prohibits remote
hosts to access the LAN network devices directly.

Item

Description

Port Forwarding

1. Select Protocol and input Public Port, Internal IP,

and Internal Port.

2. Enable the mapping setting.

3. Click Apply to save settings.

Apply & Save

1. Click to Apply all settings.

2. Go to “Save” then click on the save button if you
wish to update the configuration settings.

Save

3.8 Advanced Settings

Several advanced functions are available to increase the functionality of your MLB-G420X and wireless
network system.

3.8.1 Serial Setting

The serial settings page is where you set the serial communication parameters for the device
port. Comport Settings include working mode, serial interface, baudrate, parity, and operation
mode also its corresponding IP address and port number if related.

Item

Description

COM Port settings

1. Select Working Mode which is Console mode or

Transport Mode,

2. Select Serial Interface, Baud-Rate, Parity, Data

Bits, Stop Bits.

3. Select Operation Mode; Input IP address & Port #

for TCP/Client & UDP mode. Input Port # for
TCP/Server mode.

4. Click Apply to save settings.

Apply & Save

1.Click to Apply all settings.

2.Go to “Save” then click on the save button if you
wish to update the configuration settings.

Save

3.8.2 SNMP Agent

Simple Network Management Protocol (SNMP) is an OSI application layer protocol that facilitates
management information between network devices.
SNMP is based on the manager/agent model of a network management architecture.
An SNMP-managed network consists of three key roles: SNMP Manager, agents, and managed devices.
SNMP commands are typically issued by a network management station which is called a network
manager and are responded to by a network management agent within each managed device.

The SNMP versions are v1, v2c, v3.
SNMP v1 and v2c use community string public and private for authentication which allows SNMP servers
access all objects with read-only or read/write permissions by default. SNMP v3 enhances security with
Data Encryption.
The SNMP manager use three operations to communicate with the Managed devices.
GET/GET Next/GET Bulk is used to retrieve the information from the Managed devices.
SET is used to configure the Managed device.

Item

Description

Enable

1. Enable the SNMP Agent setting.

2. Click Apply to save settings.

3. Need to go to “Save” then click on the save button

to complete the process

Save

Read community / User

Indicates the community read access string to
permit access to SNMP agent. The allowed string
length is 0 to 255, and the allowed content is the
ASCII characters from 33 to 126.
The field is applicable only when SNMP version is
SNMPv1 or SNMPv2c. If SNMP version is SNMPv3,
the community string will be associated with
SNMPv3 communities table. It provides more
flexibility to configure security name than a
SNMPv1 or SNMPv2c community string. In addition

to community string, a particular
range of source addresses can be used to restrict
source subnet.

Write Community

Indicates the community write access string to

permit access to SNMP agent. The allowed string

length is 0 to 255, and the allowed content is the

ASCII characters from 33 to 126.

The field is applicable only when SNMP version is

SNMPv1 or SNMPv2c. If SNMP

version is SNMPv3, the community string will be

associated with SNMPv3

SNMP Agent Version

Indicates the SNMP supported version. Possible

versions are:

SNMP v1: Set SNMP supported version 1. SNMP

v2c: Set SNMP supported version 2c. SNMP v3: Set

SNMP supported version 3.

User Authentication
Protocol

Select No Auth to use an administrator account to

access objects without authentication.

Select MD5 to authenticate using HMAC-MD5

algorithms where the minimum requirement is to

use an 8-character password.

Select SHA to authenticate using HMAC-SHA

algorithms where the minimum requirement is to

use an 8-character password.

Private Object ID

The private object ID (OID) is the enterprise value for
the MLB-G420X.

MLB-G420X Wireless Terminal User Manual 38 Rev 1.1

3.8.1 IPSec-based VPN Setting

VPN (Virtual Private Network) provides private network security over Internet by
establishing secure tunnels, so that data can be exchanged in a secure manner.

IPSec is layer 3 protocol with authentication and encryption implementation.

Item

Description

IPSec Enable

Select “Enable” to enable the IPSec function.

Edit

Click “Edit” to create IPSec settings.

Apply & Save

1. Click to Apply all settings.

2. Need to go to Save then click on the save button to
complete the process

Save

MLB-G420X Wireless Terminal User Manual 39 Rev 1.1

IPSec Settings

Item

Description

Connection name

Enter a descriptive name for the VPN tunnel.

Startup mode

Select Start in Initial to set the MLB-G420X to initiate
a connection with the remote VPN gateway.

Local network

Enter the remote VPN server subnet IP of the local
network.

Local netmask

Enter the remote VPN server subnet netmask of the
local network.

Local ID

Enter an ID to identify and authenticate the local VPN
gateway.

Remote VPN gateway

Enter the WAN IP address of the remote VPN
gateway.

Remote network

Enter the remote VPN server subnet IP of the remote
network.

Remote netmask

Enter the remote VPN server subnet netmask of the
remote network

Remote ID

Enter an ID to identify and authenticate the remote
VPN endpoint.

MLB-G420X Wireless Terminal User Manual 40 Rev 1.1

Item

Description

IKE Proposal

Select IKEv1 or IKEv2

Operation Mode

Select main mode or aggressive mode to configure
the standard negotiation parameters for IKE Phase 1
of the VPN Tunnel.

Authentication Mode

Pre-shared Key

Select Pre-shared key authentication mode to for
phase 1 key exchange. The configuration fields vary
depending on the authentication mode you select.

Encryption Algorithm

Select the DES, 3DES or AES128 algorithm for the VPN
ISAKMP phase 1 encryption mode.

Hash Algorithm

Select the MD5 or SHA-1 VPN key exchange phase 1
hash mode.

DH Group

Select the DH-2 (1024) or DH-5 (1536) VPN key
exchange phase 1 Diffie-Hellman group. As the Diffie­Hellman Group number increases, the higher the level
of encryption implemented for PFS.

Life Time

Enter the number of minutes for the VPN IKE SA
phase 1 Lifetime. This is the period of time to pass
before establishing a new IPSec security association
(SA) with the remote endpoint.

MLB-G420X Wireless Terminal User Manual 41 Rev 1.1

Item

Description

Encryption Algorithm:

Select the DES, 3DES or AES128 algorithm for the VPN
ISAKMP phase 2 encryption mode.

Hash Algorithm:

Select the MD5 or SHA-1 VPN key exchange phase 2
hash mode.

Dead Peer Detection:

When you enable the Dead Peer Detection (DPD)
feature, the OnCell G3470A-LTE performs one of the
following actions when connection to a remote IPSec
tunnel is down:

• Hold: Keep the VPN tunnel

• Clear: Clear the VPN tunnel

• Restart: Re-establish the VPN tunnel on Start in

Initial mode.

• Restart by Peer: Re-establish the VPN tunnel on
Wait for connecting mode

DPD Delay

The period of dead peer detection messages.

DPD Timeout

Timeout to check if the connection is alive or not.

Apply & Save

1. Click to Apply all settings.

2. Need to go to Save then click on the save button to
complete the process

Save

MLB-G420X Wireless Terminal User Manual 42 Rev 1.1

IPSec Secure Tunnel Setup Example

MLB-G420X_A Configuration

MLB-G420X Wireless Terminal User Manual 43 Rev 1.1

MLB-G420X Wireless Terminal User Manual 44 Rev 1.1

The user can go to IPSec log to check the IPSec connection status.

MLB-G420X Wireless Terminal User Manual 45 Rev 1.1

MLB-G420X_B Configuration

MLB-G420X Wireless Terminal User Manual 46 Rev 1.1

The user can go to IPSec log to check the IPSec connection status.

MLB-G420X Wireless Terminal User Manual 47 Rev 1.1

.

Note: You can verify the IPSec connection by running the ICMP Ping command. In the above
setup example scenario, PC A can ping PCB (192.168.0.100) and PC B can ping PC A (10.0.10.100)
to verify if IPSec tunnel connection is successfully established.

MLB-G420X Wireless Terminal User Manual 48 Rev 1.1

3.8.2 OpenVPN

OpenVPN is an open-source software application that implements virtual private network (VPN)
techniques for creating secure site-to-site connections in routed configurations and remote access
facilities.It allows the MLB-G420X LAN network connection have access capability to the network
behind the VPN server.

MLB-G420X Wireless Terminal User Manual 49 Rev 1.1

Note: 1. Please make sure that the firewall setting is OFF on both PC A and PC B.

2. Please make sure that IPSec-based VPN setting function is OFF.

MLB-G420X Wireless Terminal User Manual 50 Rev 1.1

3.8.3 X.509 Certificate

X.509 is a digital certificate method mostly used for IPSec Authentication. MLB-G420X can generate a
trusted Root Certification and then generate the certificate to export in order to import on the remote
VPN router gateway.

IPSec secure tunnel with X.509 Authentication Method Setup Example

MLB-G402X_A Configuration Steps

MLB-G420X Wireless Terminal User Manual 51 Rev 1.1

Note: 1. Please make sure to delete the previous root CA before generating the new one.

MLB-G420X Wireless Terminal User Manual 52 Rev 1.1

The user can go to the IP-based VPN setting to enable the IPSec function also to create the IPSec

connection session by clicking on the tab of Edit.

MLB-G420X Wireless Terminal User Manual 53 Rev 1.1

Note: 1. Please make sure that the function of OpenVPN is disabled first.

The user has to change the authentication mode also select the local certificate and remote certificate
carefully.

MLB-G420X Wireless Terminal User Manual 54 Rev 1.1

MLB-G420X Wireless Terminal User Manual 55 Rev 1.1

Note: 1.Click to Apply all settings.

2.Go to “Save” then click on the save button if you wish to update the configuration
settings.

The user can go to IPSec log to check the IPSec with X.509 authentication connection status.

Note: You can verify the IPSec connection with X.509 authentication method by running the

ICMP Ping command. In the above setup example scenario, PC A can ping PC B
(192.168.0.100) and PC B can ping PC A (10.0.10.100) to verify if IPSec tunnel connection is
successfully established.

MLB-G420X Wireless Terminal User Manual 56 Rev 1.1

MLB-G402X_B Configuration Steps

MLB-G420X Wireless Terminal User Manual 57 Rev 1.1

MLB-G420X Wireless Terminal User Manual 58 Rev 1.1

The user can go to the IP-based VPN setting to enable the IPSec function also to create the IPSec
connection session by clicking on the tab of Edit.

MLB-G420X Wireless Terminal User Manual 59 Rev 1.1

Note: 1. Please make sure that the function of OpenVPN is disabled first.

The user has to change the authentication mode also select the local certificate and remote certificate
carefully.

MLB-G420X Wireless Terminal User Manual 60 Rev 1.1

MLB-G420X Wireless Terminal User Manual 61 Rev 1.1

Note: 1.Click to Apply all settings.

2.Go to “Save” then click on the save button if you wish to update the configuration
settings.

MLB-G420X Wireless Terminal User Manual 62 Rev 1.1

The user can go to IPSec log to check the IPSec with X.509 authentication connection status.

Note: You can verify the IPSec connection with X.509 authentication method by running the
ICMP Ping command. In the above setup example scenario, PC A can ping PC B (192.168.0.100)
and PC B can ping PC A (10.0.10.100) to verify if IPSec tunnel connection is successfully
established.

MLB-G420X Wireless Terminal User Manual 63 Rev 1.1

3.9 Maintenance

3.9.1 Ping

The ping function provides the user to a useful diagnosis tool for troubleshooting network
problems by using the ICMP ping command. Simply input the desired IP address in the Destination
field, and then press Ping button to issue the Ping command from the Web console interface.

You can ping from MLB-G420X to any desired IP addresses of hosts reside on the Cellular WAN side.

Or you can ping from MLB-G420X to any desired IP addresses of hosts reside on the LAN side.

MLB-G420X Wireless Terminal User Manual 64 Rev 1.1

Item

Description

Destination

Inputting a node’s IP address in the Destination field,

you can use the ping command to make sure it exists
and whether or not the access path is available.

Ping

Click to ping.

Note: Please note that the TCP ports of 22, 80 is not available on cellular’s WAN port. Also the
cellular’s WAN port of MLB-G420X would not resond to ICMP ping command.

MLB-G420X Wireless Terminal User Manual 65 Rev 1.1

3.9.2 AT Command

This function of the AT Commands allows the external application to obtain various status information
from MLB-G420X series. For detailed AT commands syntax description, please contact Service and
Support for such requests.
E-Mail: [e-mail]

Item

Description

Command

Input AT command in the command field.

Send

Click to send.

MLB-G420X Wireless Terminal User Manual 66 Rev 1.1

3.9.3 Password

You can change the password as desired in the field.

Item

Description

Current Password

Input current password.

New password

Input new password.

Confirm the new password

Input new password again.

Apply & Save

Click Apply to change password.
Need to go to “save” then click on the save button
to complete the process.

Note: The length of Username / Password field is limited and it is up to 36 characters input. No

symbol is allowed.

MLB-G420X Wireless Terminal User Manual 67 Rev 1.1

3.9.4 User management

MLB-G420X Wireless Terminal User Manual 68 Rev 1.1

Item

Description

Current Password

Input current password.

New password

Input new password.

Confirm the new password

Input new password again.

Apply & Save

Click Apply to change password.

Need to go to “save” then click on the save button to

complete the process.

MLB-G420X Wireless Terminal User Manual 69 Rev 1.1

3.10 Update FW

The MLB-G420X can be enhanced with more value-added functions by installing firmware upgrades.
Please download the latest release firmware from MLiS website.

1.

2.

MLB-G420X Wireless Terminal User Manual 70 Rev 1.1

3.

Item

Description

Firmware File

Click to load the firmware file

Upload

Click to upgrade the firmware

Note: Do Not power down the device during the firmware upgrade process.

MLB-G420X Wireless Terminal User Manual 71 Rev 1.1

3.11 Reset to Default

All the configuration will be reset to the factory default value.

Item

Description

Reset

Click to reset MLB-G420X to default.

MLB-G420X Wireless Terminal User Manual 72 Rev 1.1

3.12 Status

3.12.1 IO/Relay Status

Item

Description

DI1

Click GET to obtain the status of DI1.

DI2

Click GET to obtain the status of DI2.

Relay

Trigger the Relay to enable/disable relay.

Note: The default status of Relay is “Normal Open”.

MLB-G420X Wireless Terminal User Manual 73 Rev 1.1

3.12.2
IPSec Log

OpenVPN Log

MLB-G420X Wireless Terminal User Manual 74 Rev 1.1

Syslog

Please provide us the syslog in the text file upon request for further diagnosis and analysis purpose.

Item

Description

IPSec Log

Record the IPSec log.

OpenVPN Log

Record the OpenVPN log.

Syslog

Record the syslog.

MLB-G420X Wireless Terminal User Manual 75 Rev 1.1

3.13 Save

Please make sure to complete this step in order to update all the configuration changes after you click on apply
on each function’s setting page.

Item

Description

Save

Click Save button to save all setting you configure. Then
MLB-G420X will reboot.

Note: Do not power down the device during the save process.

MLB-G420X Wireless Terminal User Manual 76 Rev 1.1

4 OPERATING NOTE

4.1 Power on the Modem

After plugin the power adapter, the modem is usually fully operational within 60 seconds, after
powering it up. Depending on the signal strength of the network in the area, logging into a network
may take longer and is outside the control of the modem.

4.2 Reset to default

Press reset button, it will be reset to default. All of temporary data buffer will be clear.

4.3 External input x2

External signal input source, positive signal are DI1 and DI2, negative signal are COM_1 are COM_2. Power input
range is +12V~+48V, it will be determined as positive. It can be used for alert.

4.4 External Relay x1

Non positive and negative signal relay output, maximum power input voltage range is with load voltage 40V and
maximum load current is 2.0A. It can be used for beeper.

4.5 DB9 Connector

The RS-232/422/485 connector is DB9 male type, please refer to table 4.

4.6 Install SIM card

Please turn to back view, screw open the cover, then user will see SIM card holder. Please use SIM card faces to
PCB board and put it into holder, please screw the cover back.

MLB-G420X Wireless Terminal User Manual 77 Rev 1.1

5 MLiS Cellular Control Protocol (MCCP)

MLiS user can remotely control MLB-G420X through MLiS Cellular Control Protocol. MLiS Cellular
Control Protocol is open to MLiS user.
The MCCP should be converted to hexadecimal then count with checksum. If any question about MCCP,
please feel free to contact us. [e-mail]

MLB-G420X MCCP (SMS / Host via internet / Host via RS232)

Initial Step

Protocol

Action

MLB-CONFIGSTAGE1

Waiting for : IN STAGE1

HEX:
4D 4C 42 2D 43 4F 4E 46 49 47 53 54 41 47 45 31 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9D

MLB-CONFIGSTAGE2

Waiting for : IN STAGE2

HEX:

4D 4C 42 2D 43 4F 4E 46 49 47 53 54 41 47 45 32 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9C

MLB-CONFIGSTAGE3

Waiting for : MLB-G420X into configuration mode

HEX:

4D 4C 42 2D 43 4F 4E 46 49 47 53 54 41 47 45 33 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9B

Notice :
The wireless terminal will exit the configuration mode automatically when wireless terminal
does not get any MCCP exceed 12 seconds in working mode.

MLB-G420X Wireless Terminal User Manual 78 Rev 1.1

MCCP Setting Process via Internet/RS-232

MCCP Setting Process via SMS (using admin phone number)

MLB-G420X Wireless Terminal User Manual 79 Rev 1.1

Connection Profile

Write

Command Header

MLB-CONNECTIONPROFILE

Connection Type

1. Transparent Client Packing Mode

2. Transparent Client Fast Mode

3. Transparent Server Packing Mode

4. Transparent Server Fast Mode

5. Socket UDP Client Mode

6. Socket TCP Client Mode

7. Socket TCP Server Mode

Connection Index

0 ~ 4

IP Address

ex: 192.168.1.1: 36000
Maximum 37 chars

Enabled bit

0. Disabled

1. Enabled

End Tag

Z

Example:

MLB-CONNECTIONPROFILE: 6, 2, 192.168.100.99: 27000, 1, Z
set 192.168.100.99 port 27000 to profile 2 for TCP Client Mode (enabled).

Read

Command Header

MLB+CONNECTIONPROFILE:

Connection Type

1. Transparent Client Packing Mode

2. Transparent Client Fast Mode

3. Transparent Server Packing Mode

4. Transparent Server Fast Mode

5. Socket UDP Client Mode

6. Socket TCP Client Mode

7. Socket TCP Server Mode

Connection Index

0 ~ 4

End Tag

Z

Response Format

Response +: {IP}: {Port}, {Disable (0)/ Enable (1) bit}

Example:
Send --> MLB+CONNECTIONPROFILE: 6, 2, Z
Response +: 192.168.99.22:54321,1
(Socket TCP Client Mode at Index 2 IP 192.168.99.22:54321 has been enabled)

MLB-G420X Wireless Terminal User Manual 80 Rev 1.1

UART Setting

Write

Command Header

MLB-UARTSETTING

UART Type

1. RS232

2. RS485

3. RS422

Baud rate

0. 230400

1. 115200

2. 57600

3. 38400

4. 19200

5.

6. 9600

7. 4800

8. 2400

9. 1200

10. 300

11. 110

Parity Bit

1. None

2. ODD

3. EVEN

Stop Bit

1. 1-bit

2. 2-bit

HW Flow Control

0. Disable

1. Enable

DTR Level

0. High Level

1. Low Level

RTS Level

1. High Level

2. Low Level

End Tag

Z

Example:

MLB-CONNECTIONPROFILE: 6, 2, 192.168.100.99: 27000, 1, Z
set 192.168.100.99 port 27000 to profile 2 for TCP Client Mode (enabled)

Read

Command Header

MLB+UARTSETTING

UART Type

1. RS232

2. RS485

3. RS422

Baud rate

0. 230400

1. 115200

2. 57600

3. 38400

4. 19200

MLB-G420X Wireless Terminal User Manual 81 Rev 1.1

5. 9600

6. 4800

7. 2400

8. 1200

9. 300

10. 110

Parity Bit

1. None

2. ODD

3. EVEN

Stop Bit

1. 1-bit

2. 2-bit

HW Flow Control

0. Disable

1. Enable

DTR Level

1. High Level

2. Low Level

RTS Level

1. High Level

2. Low Level

End Tag

Z

Response format

Response +: {UART Mode }, {Baud rate}, {Parity Bit},
{Stop Bit}, {HW Flow Control (Disable / Enable)}, {DTR
(H/L)}, {RTS (H/L)}

Example:

Send --> MLB+UARTSETTING: Z
Response +:1, 1, 2, 2, 0, 0, 1
(UART Mode is RS232 at 115200 / ODD / 2Bits / H/W flow control disabled / DTR
at Low / RTS at High)

MLB-G420X Wireless Terminal User Manual 82 Rev 1.1

Internet Setting

Write

Command Header

MLB-INTERNETSETTING

APN

User Name

Maximum 31 chars

Password

Maximum 31 chars

Internet Service Type

1. Transparent Client Packing Mode

2. Transparent Client Fast Mode

3. Transparent Server Packing Mode

4. Transparent Server Fast Mode

5. Socket UDP Client Mode

6. Socket TCP Client Mode

7. Socket TCP Server Mode

End Tag

Z

Example:

MLB-INTERNETSETTING: internet, user123, pass456, 2, Z
set APN = "internet" // User Name = "user123" //
Password = "pass456"
Internet connection type = "Transparent Client Fast Mode"

Read

Command Header

MLB+INTERNETSETTING

End Tag

Z

Response format

Response +: {APN}, {User Name}, {Password}, {Internet
connection type }

Example:

Send --> MLB+INTERNETSETTING: Z
Response +: internet, user, pass, 4 (APN=internet /User Name =
user/Password=pass/Current Service Type is Transparent Server Fast Mode)"

MLB-G420X Wireless Terminal User Manual 83 Rev 1.1

Phone Setting

Write

Command Header

MLB-PHONESETTING

Phone Event

1. Reboot

2. Connection Off-Line

3. DIO1 Event

4. DIO2 Event

5. Relay Event

6. Admin

Phone Number

Format: [phone]
Maximum 19 chars

Enabled

0. Disabled

1. Enabled

End Tag

Z

Read

Command Header

MLB+PHONESETTING:

Phone Event

1. Reboot

2. Connection Off-Line

3. DIO1 Event

4. DIO2 Event

5. Relay Event

6. Admin

End Tag

Z

Response format

Response +: {Phone Number}, {Phone Event}

Example:

Send --> MLB+PHONESETTING: 2, Z
Response +: +886935123456,1
([phone] is the event of Off-Line that has been enabled)"

MLB-G420X Wireless Terminal User Manual 84 Rev 1.1

Reconnect Setting

Write

Command Header

MLB-RECONNECTSETTING:

Connection Retry Time

0. No Retry

9999. No limitation
Range (0 ~ 9999)

Retry Time Interval

Range (1 ~ 50) Minute

End Tag

Z

Read

Command Header

MLB+RECONNECTSETTING:

End Tag

Z

Response format

Response +: { Retry Time }, { Retry Time Interval }

Example:

Send --> MLB+RECONNECTSETTING: Z
Response +: 9999,5 (Connecting maximum retry time is no limit and retry
interval is 5 minutes)"

MLB-G420X Wireless Terminal User Manual 85 Rev 1.1

Heartbeat Setting

Write

Command Header

MLB-HEARTBEATSETTING

Heart Beat Time

0. No Heart Beat
Range (0 ~ 9999) Second

Heart Beat String

Maximum 15 chars

Sending Type

0. Send to profile 0

1. Send to all profiles

End Tag

Z

Read

Command Header

MLB+RECONNECTSETTING:

End Tag

Z

Response format

Response +: { Retry Time }, { Retry Time Interval }

Example:

Send --> MLB+RECONNECTSETTING: Z
Response +: 9999,5
(Connecting maximum retry time is no limit and retry interval is 5 minutes)"

Packing Setting

Write

Command Header

MLB-PACKINGSETTING:

Device ID

ex: Hello
Maximum 19 chars

Packing Header

ex: 123
Maximum 3 chars

Packing Enabled bit

0: Disabled
1: Enabled

End Tag

Z

Read

Command Header

MLB+PACKINGSETTING:

End Tag

Z

Response format

Response +: {ID}, {Header}, {Packing (Enable/Disable)}

Example:

Send --> MLB+PACKINGSETTING: Z
Response +:ID_123,MST,1
(The device ID is " "ID_123"") (Packing header will be ""MST"" and has been
enabled)"

MLB-G420X Wireless Terminal User Manual 86 Rev 1.1

Report DIO Setting

Write

Command Header

MLB-REPORTDIOXSETTING

Report path

1. Via SMS

2. Via Internet

End Tag

Z

Read

Command Header

MLB+REPORTDIOXSETTING

End Tag

Z

Response Format

Response +: { Retry Time }, { Retry Time Interval }

Example:

Send --> MLB+REPORTDIOXSETTING: Z
Response +: SMS
(The DIO status will be reported via SMS)

Get DIO

Write

Command Header

MLB-GETDIOX

DIO Number

1. DIO1

2. DIO2

End Tag

Z

Set Relay

Write

Command Header

MLB-SETRELAY

Relay Level

0. Low

1. High

End Tag

Z

Save Parameters

Write
Command Header

MLB-SAVEPARAMETERS:

End Tag

Z

Restart

Write
Command Header

MLB-RESTART:

End Tag

Z

MLB-G420X Wireless Terminal User Manual 87 Rev 1.1

SALES CONTACT

Website : www.schmidtm2m.com

Taiwan

Schmidt & Co., (Hong Kong) Limited
5/F, 139 Song Jiang Road, Taipei 104, Taiwan
T (886-2) 2502-5095
F (886-2) 2502-6717
E [e-mail]

Shenzhen,

China

Schmidt & Co., (China) Ltd. Shenzhen Branch
Schmidt (Shenzhen) Co., Ltd
3/F Unit E, International Culture Building,
Fu Tian Road,
Shenzhen 518033
T (86-755) 8376-0232
F (86-755) 8376-0025
E [e-mail]

Singapore

Schmidt Electronics (S.E.A.) Pte Ltd
158 Kallang Way #06-10, Performance Building Singapore 349245
T (65) 6272-7233
F (65) 6273-4750
E [e-mail]

MLB-G420X Wireless Terminal User Manual 88 Rev 1.1

6 ORDERING INFORMATION

MLiS Product

MLB-G420X: The MLIS Dual-Band 2G/3G wireless terminal

Power Adaptor

MLA-PSP-100: Input: AC 100 ~ 240V Output: 9V/1.3A DC jack 5.5/2.1
MLA-PSP-101: US Adapter Plug
MLA-PSP-104: British Adapter Plug
MLA-PSP-103: European Adapter Plug
MLA-PSP-102: Australia Adapter Plug
MLA-CAB-001: DC Jack power line 5.5/2.1

Cable

MLA-CAB-101: DB9 connector for RS232 (female)

Antenna

MLA-ANT-002: Magnet standalone antenna
MLA-ANT-001: PCB antenna

MLA-ANT-005: Magnet 850/900MHz-1800/1900MHz -2100MHz

5- band antenna with male SMA connector1.5dBi

MLB-G420X Wireless Terminal User Manual 89 Rev 1.1

Regional Contact

Taiwan | [phone]
China | [phone]
Singapore | [phone]
Email | [e-mail]

Official Website

MLiS Website | www.schmidtm2m.com
Support | www.schmidtm2m.com/support
Download | www.schmidtm2m.com/download

Facebook | www.facebook.com/MLiSM2M