2.1mm Power Jack 12V DC (Center Positive) 500ma

Relay 1-4

Relay Status LEDs

SPST Relay Port

Arduino Nano Port

GND +5V 400ma SDA

Relay 5-8

I²C Output to Next Device

SCL

12V DC Power Connector

2.1mm Power Jack 12V DC (Center Positive)

Power LED Address Jumper

500ma 5VDC Switcher Power Supply

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