Skylink Rolling Code Technology.
Easy to install, no special tools required.
Turn on/off lights, fan, and small appliances with a simple push of a button.
Keychain style transmitter (long-life alkaline battery included) that goes with you.
Compact-size dual button transmitter can be used to control another SW-18R Wireless Switch Receiver (sold separately).
Transmitter can also be used to operate a garage door with 18R Garage Door Receiver (sold separately).
One year warranty.