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VM300-L and VM300-H Module Specifications
1. Features (PCB version: 4.0/5.0)
1.1 Hardware Features
Top view screenshot:
Module packaging：
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Two hardware versions: built-in antenna (VM300-L) and external antenna
(VM300-H)
Two external antenna RF female sockets (VM300-H only)
Comes with a button to restore factory parameters
Wide power supply working voltage: DC5V--15V
Support power input overvoltage protection function (power supply voltage
exceeds 15.5V automatically power down)
Main chip: MT7620N, 580MHz
32Mb SDRAM, can be expanded to 64Mb; 4Mb SPI Flash, can be expanded to
16Mb (Byte)
WiFi working frequency band: 2.4GHz, 2T2R dual antenna, 300Mbps
transmission rate
Support 1--14 WiFi channels
Rated average power consumption <2W
Module RF output power 14.5dbm--16dbm (two levels of output power can be
adjusted)
Support temperature compensation and frequency stabilization technology (TAFC)
to ensure the stability of WiFi signal.
Support 802.11b/g/n protocol
Working environment temperature: -25℃-- 55℃
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Female
interface
Subinterface
6PIN
female
(PB)
6PIN pin
interface
(PA)
8PIN pin
interface
(PC)
RJ45
female
Description
VIN+
√
√
DC5V--15V
WAN
√
Software control interchangeable
LAN
√
√
WAN status indication
√
1. MOS tube open circuit output,
built-in 330Ω limit flow
resistance
2. Output current: 10mA
WiFi bridge
connection status
indication
√
1. MOS tube open circuit output,
built-in 330Ω limit flow
resistance
2. Output current: 10mA
Reset signal input
√
Restore factory parameters
UART
Used for transparent transmission
between serial port and network
data
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1.2 Function Features
Two software-controllable working modes: routing mode, bridge + repeater mode
Support intelligent transparent bridge mode, and support AP Client and AP
Station at the same time
Support VDNS technology, use domain name to log in to the configuration page
in bridge mode
The relevant parameters of the device can be configured through the WEB page
configuration or the VCC mobile phone APP
Software adjustable two-level WiFi RF output power (14.5dbm/16dbm)
Support SSA 1.2 version signal strength remote center alarm protocol
Support VONETS-Configuration Management Protocol V2.3 (Top Secret)
Support transparent transmission of serial and network data
(VONETS-UART_UDP or TCP data forwarding instructions 3.0)
Online software upgrade
The main functional interfaces are as follows:
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Female interface
Subinterface
Hardware pin definition (PIN)
Description
PAPBPC
VIN+
6
6
DC5V--15V, the input voltage ripple is
required to be less than 100mV, otherwise it
will affect the WiFi transmission
performance
GND
558、4
Module ground
LAN
1:RX-
2:RX+
3:TX-
4:TX+
1:RX-
2:RX+
3:TX-
4:TX+
LAN Port Status Indication
Output
3
1. MOS tube open circuit output, built-in
330Ω current limiting resistor
2. Output current: 10mA
WAN Port Status Indication
Output
2
1. MOS tube open circuit output, built-in
330Ω current limiting resistor
2. Output current: 10mA
WiFi Status Indication
Output
1
1. MOS tube open circuit output, built-in
330Ω current limiting resistor
2. Output current: 10mA
Reset Signal Input
5
After the module works normally, keep the
low level for more than 3 seconds, the
module will restore the factory parameters
(less than 0.6V is the low level)
UART-TX
6
TX signal line of UART used for serial port
transparent transmission, TTL level output
UART-RX
7
RX signal line of UART used for serial port
transparent transmission, TTL level input
Standard RJ45 female
socket pin definition
reference
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2.Hardware Interface Details
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1. Power Supply Parameters
Supply voltage
range
Input
power
Typical power
supply
Power
ripple
Protection voltage upper
limit
DC5-15V
≥5W
5V/1A
＜100mV
15.5V
2. Measured table of performance parameters of working electrical appliances (ambient
temperature: 27℃)
Supply voltage
Work
Stage
Working current
(mA)
Main chip temperature (℃)
5V
Booting
80-270
27-43
Standby
180-259
46
transfer
data
450-580
70
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3. Electrical Performance Parameters
4. Network throughput test
VM300-L throughput test fluctuation graph:
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VM300-H throughput test fluctuation graph:
5. Supplied accessories
Two 3dBi external antennas of VM300-H with RF cable buckle
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