If you use the Skylink Swing Door Opener to add remote control access to any swinging door, you can control your door using a handheld wireless remote that hangs from your keychain. The Keychain Remote for Swing Door can control up to four Swing Door Openers handy if you have a tendency to forget your keys! What's Included # Remote control # Key ring # Alkaline battery # Instructions Additional Uses for Keypad Entry The Keypad for Swing Door/Garage Door Closer will unlatch and open the Swing Door Opener w/Magnetic Lock, as well. A wireless wall-mounted keypad is also available to control the Swing Door Opener.