A manual trigger controlled 12vdc outlet switch. There is a jack for your power supply to plug into and a 2 position terminal block for your output of 12vdc and ground. When the manual trigger is pressed, the output is energized, when released the output is deenergized. Works great for air cannons or simple 1 function animatronics. This device does requires a 12vdc wall adapter power supply which is included. Max power output thru the switch is 500ma, so we provide a regulated 1000ma power supply.