4 channels relay module,Optocoupler isolation,Optional module control board 5V 12v 24v

4 channels relay module with optocouplers, relay control board

Module size: 7cm * 5.3cm

Pull low-level control

You can control various appliances, and high current loads

[Features]

Using high-current relay, AC250V 10A DC30V 10A
Contact partially independent wiring, safe and reliable
Standard interface, can be extended in a variety of development board
With fixed screw holes for easy installation

Suitable for a variety of platforms such as 51/AVR/AVR/ARM