
MEITRACK MD822S MDVR User Guide
Copyright © 2020 Meitrack Group All rights reserved.
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Pin Number Sign Name
Cable Color
Description
13
OUT1
Yellow
Output 1; low level triggering by default (0 V); invalid: open collector
Maximum voltage for output open collector (invalid): 40 V.
Maximum current: 400 mA.
Allow users to set the high level triggering mode and PWM
triggering mode.
Connect to an external relay to remotely cut off the vehicle fuel
cable or engine power supply.
14
None (reserved) None
None (reserved)
15
RS485_B-
Yellow/Green
RS485 B- signal cable (RS485 interface)
Reserved
16
Yellow/Blue
RS485 A+ signal cable (RS485 interface)
Reserved
17
GND
Black
Ground wire
18
CAN_L
Orange/White
Connect to a CAN bus peripheral.
19
CAN_H
Orange
Connect to a CAN bus peripheral.
20
GND
Black
Ground wire
21
GND
Black
Ground wire
22
GND
Black
Ground wire
23
SOS
White
SOS alert input cable
24
None (reserved) None
None (reserved)
3
How it Works
3.1
Working Diagram
MD822S working diagram