4 Channel 5V Relay Module

4 Channel 5V Relay Module 4 Road Relay Control Board With Optocoupler For ARM PIC AVR DSP Electronic

Product Description:
4-channel relay output modules, relay output contacts 250A 10A. Input IN1, IN2, IN3, IN4, the signal line LOW effective. VCC, GND power input, can relay a separate power supply relay power input ofJD-VCC

Uses:
1, support all MCU control.
2, the industrial sector;
3, PLC control
4, smart home control;