A great way to install a switch without having to do any wiring. Mounts simply and easily with self-adhesive tape. Switch attaches to wall with tape, so no wiring is required. Sends signals to a base transceiver within 100 feet. The 4-button unit controls module unit numbers 1-4, 5-8, 9-12 or 13-16. The base Transceiver receives all 16 unit numbers on a house-code, and has a built-in appliance module too. Both wall switch and transceiver are included. Great convenience.
Lithium battery included.
Manufacturer: X10 Wireless Technology, Inc
Manufacturer warranty: 1 year 
Product questions: 800-824-3005