MEITRACK T399 Bluetooth Vehicle Tracker User Guide
Copyright © Meitrack Group 2021. All rights reserved. - 9 -
port, negative trigger input port, and output port.
1
Power
(+)
2
GND
(-)
3
Input 1
(-)
4
Input 2
(+)
5
Input 3
(+)
6
Input 4
(+)
7
Output 1
8
1-wire
9
+ 5V
Pin Number
Cable Color
Description
1 (Power +)
Red
Positive charge of the power input. Connect to the positive charge of the
vehicle battery. Input voltage: 11.4–90 V. 12 V or 24 V is recommended.
2 (GND)
Black
Ground wire. Connect to the negative charge of the vehicle battery or to the
negative terminal.
3 (Input 1)
Grey
Digital input (negative trigger by default)
Connect to a vehicle door trigger signal cable to detect vehicle door status.
(Most vehicles made in China, South Korea and Japan are negative edge-
triggered.)
The port can be configured as the positive trigger.
4 (Input 2)
White
Digital input (positive trigger by default). The port can be configured as the
negative trigger.
Connect to the vehicle's ACC cable by default to detect the vehicle's ACC
status.
5 (Input 3)
Blue
Digital input 3 (positive trigger by default). The port can be configured as the
negative trigger or analog input 2 (0–30 V).
6 (Input 4)
Yellow
Digital input 4 (positive trigger by default). The port can be configured as the
negative trigger or analog input 1 (0–30 V).
7 (Output 1)
Green
Valid: low level (0 V)
Invalid: open collector
Maximum voltage for the open collector output (invalid): 60 V
Maximum current for the low level output (valid): 500 mA
Set the PWM output (adjustable output time and pulse width).
Connect to an external relay to remotely cut off the vehicle fuel cable or
engine power supply.
8 (1-Wire port)
Pink
Connect to the iButton reader and other devices supporting the 1-Wire