Devantech 16A 8-Channel Latching Relay Module

The Devantech 16A 8-Channel Latching Relay Module is a low power relay module which is powered solely from the USB bus and provides eight volt free contact relay outputs with a current rating of up to 16Amp each. The relays are SPCO (Single Pole Change Over) types and provide position 0, position 1 and common pins (latching relays and have no "normally open" or "normally closed" contacts) on the screw terminals labeled as 0, C and 1 accordingly. The relays will also retain their state in the absence of power.