User Instructions

MTR2018 User Manual
7
1.7 4Pin Input Interface
MTR2018 02 Input Interface Connect To GVXXX Series Devices
MTR2018
PIN
Colour
Description
Connect to GV300N
Input
Interface
PWR
Red
8-32V input，Can be connected to the vehicle
battery directly
PIN11 PWR
GND
Black
Ground
PIN6 GND
TXD_232
Blue
RS232 level, receiver data, connect to TXD
of GVXXX Devices
PIN5 TXD
RXD_232
Green
RS232 level, Transmit data, connect to RXD
of GVXXX Devices
PIN4 RXD
1.8 Device Status LED
LED
Trigger Event
State
Power LED (Red)
Power on device
Indicate the power status
RFID status LED (Green)
Power on device
Green LED flashes for 1s, then off.
Read a RFID success.
Green LED lights for 0.5s, then off.
1.8 Device Status Buzzer
BUZZER
Trigger Event
State
Buzzer
Power on device
Beeps for 0.5s.
Read a RFID success.
Beeps for 0.5s
Message Format and Operation
Reference GVXXX @Track Air Interface Protocol.