Overview

Quad Relay Module with Optocouple isolation.

Features

• Operating voltage is +5V.

• A power LED and a relay status LED

• With mounting hole

Pin Definition

• 1. VCC : Isolated VCC (+5V).

• 2. GND : Connect to Gnd.

• 3. IN1 : Control pin. HIGH to turn-on relay, LOW to turn-off relay. Driving current must > 4mA.

• 4. IN2 : Control pin. HIGH to turn-on relay, LOW to turn-off relay. Driving current must > 4mA.

• 5. IN3 : Control pin. HIGH to turn-on relay, LOW to turn-off relay. Driving current must > 4mA.

• 6. IN4 : Control pin. HIGH to turn-on relay, LOW to turn-off relay. Driving current must > 4mA.

• 7. COM : Isolated GND. Normally connected to GND.

• 8. GND : Connect to Gnd.