SkylinkHome TC-318-1 One Button Wireless Lighting Remote Control | Simple Small Easy To Use Handheld  Home Automation Transmitter Communicates with SkylinkHome receivers to provide wireless control of anything in your home Credit card sized transmitter. Small enough to fit in a pocket or purse. Easy to program and use. Up to 500 feet operating range in an open area. Long range, no problem. Long life lithium battery included