Using a large current relay, AC 250V 10A DC 30V 10A contacts part independent wiring, safe and reliable; Standard interface, can be extended in a variety of development board; With screw holes for easy installation; Suitable for 51 / AVR / AVR / ARM etc various platform.

4-channel relay output module; Control port: 5V; Relay output maximum contact point: 250V / 10A; Input IN1 / IN2 / IN3 / IN4 signal wire low level is effective; VCC, GND power input port; Individually power supply input port JD-VCC for relay.

Supports all microcontroller, industrial area, PLC control, home intelligent control.