A Mat Switch 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 mat switch is stepped on, the output is energized, when there is no on on the matswitch the power is off. Works great for air cannons or actor signaling lights. This device does requires a 12vdc wall adapter power supply which is included. Max power output thru the mat switch is 1 amp, so we provide a regulated 1000ma power supply.