MikroTik RB912R-2nD-LTm&R11e-4G quick start Guide

LtAP mini 4G kit

The LtAP mini 4G kit is a wireless access point with two SIM card slots for 3G/LTE data. The LtAP mini 4G kit
comes with factory-installed a 4G card.

Connecting

 If the intent is to use GPS, an external antenna is required (see “GPS usage”).
 Choose your powering solution (see “Powering”).
 Connect your Internet cable to the Ethernet port.
 Set your computer IP configuration to automatic (DHCP).
 Connect your direct input power jack if not using PoE, to start up the device.
 The device will boot up and Wireless network will be available for connecting.
 Open network connections on your PC, mobile phone or other device and search for MikroTik wireless

network and connect to it.

 Once connected to the wireless network, open http://192.168.88.1 in your web browser to start

configuration, since there is no password by default, you will be logged in automatically. The configuration
also can be done using the mobile app (see “MikroTik mobile app”), and WinBox configuration tool

http://mt.lv/winbox.

 We recommend clicking the “Check for updates” button and updating your RouterOS software to the latest

version to ensure the best performance and stability.

 Choose your country, to apply country regulation settings and set up your password in the screen that

loads.

Mounting

1. It is possible to attach the device to a wall, using
the provided screw holes on the sides of the unit.
The device should be mounted in a way that the
cable openings are pointing downward as shown
in the picture.

2. The ports are protected with a small door, that is
held in place with one screw. Use Philips PH2
screwdriver to access the ports.

3. The door has cut-out places for all available ports,
but please only break out the openings that you
will use. The device can be used both indoors and outdoors. The IP rating scale for this device is IP54.

4. The device enclosure has places where you can drill openings for external LTE and GPS antennas. Use a
drill to make holes that are appropriate for the antenna cable used.

Alternatively, you can obtain “DINrail Pro” - mounting bracket, designed to fit standard 35 mm x 7.5 mm DIN rails.

https://mikrotik.com/product/dinrail_pro

When mounting outdoors, please ensure that any cable openings is directed downwards. Use PoE injector
and proper grounding. Recommended using Cat6 cable.

Warning! This equipment should be installed and operated with a minimum distance of 20 cm between the
device and your body. Operation of this equipment in the residential environment could cause radio
interference.

Mounting and configuration of this device should be done by a qualified person.

See mikrotik.com/products for the latest version of this document. Document #51656 Modified on: 28.AUG.2019

Powering

• Direct-input power jack (5.5 mm outside and 2 mm inside, female, pin positive plug) accepts 8-30 V DC.

• microUSB port accepts 5 V powering.

• Ethernet port accepts passive and 802.3af/at Power over Ethernet 8-57 V DC (compensate for the loss on

cable, so more than 12 V recommended).

The power consumption under maximum load with attachments can reach 9 W.

Connecting to a PoE Adapter:

1. Connect the Ethernet cable from the device to the PoE+DATA port of the PoE adapter.

2. Connect an Ethernet cable from your local network (LAN) to the PoE adapter.

3. Connect the power cord to the adapter, and then plug the power cord into a power outlet.

Extension slots and ports

• Built-in 2 GHz wireless access point module, AP/station/bridge/p2p modes are supported. Onboard PIF

antennas built-in. Antenna gain1.5 dBi.

• miniPCIe slot and two SIM slots (can’t be used without a modem installed, can’t be used both at the same

time) to be used with a 3G/4G/LTE modem. Onboard antennas available, but openings for external
antennas are provided on the case.

• Built-in GPS module - uFL connector provided for an external antenna. To enable, set the port to serial0

(this disables the DB9 port on the unit).

• One 10/100 Ethernet port, supporting automatic cross/straight cable correction (Auto MDI/X). Either

straight or crossover cable can be used for connecting to other network devices. The Ethernet port accepts
12-57 V DC powering from a passive PoE injector.

• One DB9 RS232 serial port for serial console access. Configured as 115200 bit/s, 8 data bits, 1 stop bit, no

parity. Can’t be used if built-in GPS is enabled on serial0.

• One microUSB 2.0 port for powering only.

Configuration

RouterOS includes many configuration options in addition to what is described in this document. We suggest to
start here to get yourself accustomed to the possibilities: http://mt.lv/help. In case IP connection is not available, the
Winbox tool (http://mt.lv/winbox) can be used to connect to the MAC address of the device from the LAN side (all
access is blocked from the internet port by default).

For recovery purposes, it is possible to boot the device from the network, see section Buttons and jumpers.

See mikrotik.com/products for the latest version of this document. Document #51656 Modified on: 28.AUG.2019

miniPCIe slot usage

The device is equipped with a miniPCIe slot and factory installed 4G modem. Two SIM slots are provided for use
together with a miniPCIe modem. SIM slot is not usable separately.

In this case, an internal antenna is connected to the modem. Replacing a miniPCIe module should be
done by a qualified person, please follow safety precautions when handling electrical equipment:

1. Use a wrist grounding strap when unpacking and working with electrical components to avoid electrical
discharge (ESD) damage.

2. Open front cover by unscrewing one screw with Philips PH2 screwdriver.

3. Remove four screws on the bottom of the case and lift off the top part of the case. You will see the antenna
attached to it.

4. Locate the miniPCIe card on the PCB and remove two screws.

5. Attach provided a thick thermal pad to the card, and install the card into miniPCIe slot so that thermal pad
is between PCB and card.

6. Secure card in place using previously removed two screws.

7. Attach the grey uFL connector to the MAIN antenna connector of the modem, attach the black cable to the
secondary (or AUX) connector.

8. To use external antennas, attach antenna connectors and use 6.5 mm drill bit to drill holes on the side of
the unit. (see “Mounting”) description 4.

9. Please see picture bellow on how to place rubber seals for best water protection.

10. Attach antenna connectors to the installed card and GPS connector on the PCB, as additional rubber
silicone can be used to secure connectors in place on card and PCB board.

11. Attach a thinner thermal pad to the top of the card.

12. Reassembly in back order.

After you have reinserted the device into the case and secured it with the screws that were removed earlier, slide in
the SIM cards from your mobile operator into the SIM slots, with the chips facing as shown on the port label. The
slot accepts miniSIM (2FF). Close the black latch for SIM cards, to secure them in the slots.

See mikrotik.com/products for the latest version of this document. Document #51656 Modified on: 28.AUG.2019