SMARTLAB USB 4 CHANNELS RELAY OUTPUT 4 CHANNELS PHOTO ISOLATOR INPUT BOARD

USB 4 channels relay output / photo isolator input board provides photo couple digital input and relay output channels. The photo isolator input part provides 4 photo couple digital input channels, which allow the input signals to be completely floated and prevent the ground loop. The relay output part provides 4 relays to drive 4 different output channels. Each relay channel can be used to control ON/ OFF of external devices, to drive external power relays, to activate alarms...etc.