Used see photos. Shutters operate smoothly in both directions and hold/normal switch latches the input correctly. We powered it on using our in-house bench power supply: in order to operate it, you will need to supply power somehow or buy a power supply. We can make a simple power supply for you if manual operation is desired (the same way we operate it in the video above) for a nominal fee. If you need automatic operation/automation, you would need to buy a separate controller.
