Ambient On/Off Thermostat Fireplace Remote Control (RCST) Battery operated fireplace remote control for millivolt gas valves Remote control transmitter features simple On/Off/Auto buttons and allows for temperature control Transmitter operates on (3) AAA batteries, receiver box operates on (2) AA batteries Receiver connects to any standard millivolt gas valve system, 20-foot range Includes transmitter, receiver box, wall plate, wall clip, screws, 22-inch wires, batteries, velcro, and instruction manual