8 Channel Relay Module (USB-RLY16L, Low Power Version, Up to 16Amp)

A low power version of the USB-RLY16 module, the USB-RLY16L 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. 

The USB-RLY16L provides a red LED mounted immediately next to each relay to indicate whether it is in a position 1 state (LED on) or position 0 state (LED off).