GE 18279 is an indoor wireless wall switch lighting control device that allows you to remotely control lights and devices plugged into a standard indoor outlet. With a range of up to 100 feet, you can easily turn lights on or off from anywhere in your home. The device is easy to set up - simply plug the receiver into an outlet, plug the device you want to control into the receiver, and you're ready to go. The included remote transmitter has a 12V A23 battery (installed), and uses only 12V Alkaline A23 batteries.