4 channel relay module, relay control board with optocoupler

4-channelrelayoutput modules,relayoutput contacts250A 10A.InputIN1,IN2,IN3, IN4,the signal lineLOWeffective.VCC, GNDpower input,canrelaya separatepowersupplyrelaypowerinput ofJD-VCC.

Uses:

1,supportallMCU control.

2,theindustrial sector;

3, PLCcontrol;

4, smart homecontrol;