2.1mm Power Jack 12V DC (Center Positive) Address Jumper ...

I/O Connectors

GND GP7

GP6

GND GP5 GP4

GND GP3 GP2

Relay Status LEDs

GND +5V

I²C Output to Next Device

SDA SCL

SPDT Relay Port

SCL SDA

Input from I²C Master

+5V GND

12V DC Power Connector 2.1mm Power Jack 12V DC (Center Positive)

I²C LED Address Jumper

I²C Pull-up Jumper (4.7K)

Power LED

CONNECTOR PINOUTS FOR 20A SPDT RELAY Relay Warranty Rating: 20A@250VAC 20A@30VDC Coil: 12VDC