The ZOMS-TR12V-V2 wireless trigger is a device that coordinates your Yard Master Electric/Tension outdoor projection screen with the projector and no wires are required. It plugs into the projector’s power receptible. When the projector powers on, the wireless 12-volt trigger acts as a radio-frequency wireless remote and brings down the projection screen into the “open” position. When the projector powers off, the trigger commands the screen to retract back into its casing. The ZOMS-TR12V-V2 remembers the loading current automatically and has a strong anti-interference for a stable signal transmission.