11
17
18
19
20
21
22
23
24
DM
VUSB
EN
DC+
DC-
2
J1939
A
B
C
D
E
F
G
Battery
Minus
（
Ground
）
Battery
Plus
（
+V
）
CAN/
J1939
High
CAN/
J1939
Low
CAN/J1939
shield
Protocol”High”L
ine,i.e
CAN/J1708/J19
39 High
Protocol”Low”
Line,i.e
CAN/J1708/J1
939 Low
3
Com
RS232 /dev/ttyHSL0.
4
ACC
input
Connect with vehicle ACC power.
Voltage range: 0-30V.
Ps: With ACC function, the device is requested to connect the power source via DC
adaptor simultaneously to power on after ignition. please refer to 3-2 for the DEMO
and source code of ACC.
5
GPIO
output
Red
White
Green
Yellow
Black
Voltage range: 0-30V
Voltage range:0-3.7V
Input 1
Input 2
Output1
Output2
GND
6
USB
USB Type-A(can not be used simultaneously with USB Type-C on the device)
