The Heath Zenith Wireless Command, SL-6021-WH gives convenient control from across a distance to lights with the remote switch set. The remote controls works with the wall switch up to 100 ft. away to turn lights on, off and dim five different light levels. Each remote comes with an optional visor clip for control lights from a car and an A23, 12 volt battery. Battery typically lasts two years. The wall switch receiver is for use with up to 300-watts of incandescent lighting. The Heath Zenith Wireless Command remote switch set carries a two year warranty, battery excluded.