Experience the convenience of turning on your home's lights with the simple press of a button on your key chain remote. This tiny Keychain Remote control has four buttons that control X10 addresses 1 and 2, or 5 and 6 on any of the 16 house codes. The bottom two buttons control the dimness and brightness of the last unit turned on. The Keychain Remote is powered by a CR2025 3V lithium battery (included) and requires an RF receiver like the X10 16-Device Plug-In RF Base. With the wireless Keychain Remote you'll never have to enter your home in the dark again!