Elecrow CrowPanel-CM4 Display User Manual page 4

Pin and Indicator Definition
Relay
CM2
COM2
C2
NC2
O2
NO2
CAN
CANL CL
CANH CH
GD
GND
A+
ADC+
A-
ADC-
GD
GND
ADC
CM1
COM1
C1
NC1
O1
NO1
RS485
485A1+
A1
485B1-
B1
485GND
GD
485A2+
A2
485B2-
B2
GD
485GND
DO
D1
DO1
D2
DO2
GD
GNDO
3V3
3.3V
PWR CM4 Power Indicator
User-defined Function Indicator
USER
CM4 Status Indicator
ACT
3
DI
I1
DI1
I2
DI2
GD
GNDI
5V
5V