User's Manual

5 Microphone positive/MIC + Brown
5/6 line can be used as an external MIC
[standard function] or NTC temperatur
e
detection [optional function]
6
Microphone
negative/MIC-/GND
Gray
Equipment ground
7 Serial Receive/RXD Orange
7/8 line can be used as SOS line access
[standard function]
Or 6/7/8 line for UART communication,
compatible with 3.3V/5.0V UART [optional
fu
nction]
8 Serial transmission/TXD Orange
3.3 Application note about SOS and recording function
1) After the user presses the SOS button 3S, the device automatically starts recording for 60s
and reports the SOS distress alarm;
2) Send the JT instruction and the device will start recording.
1 JT,<time> Enable device monitoring, time: 10 ~ 300 (default 60s)
3.4 Application Notes on ACC ON/OFF
1) ACC switch and GPS switch related instructions: ACCCTLGNSS;
2) Parameter setting and related instructions of vehicle voltage and ACC switch: FCG =
SET1/SET2.
3) Pay attention to the relationship between ACCCTLGNSS and MODE, 21. The MODE, 21
instruction is valid only when ACCCTLGNSS, 1 #.
1 ACCCTLGNSS, A # instruction
r