If you have a security/home automation system set up in your home, you can easily add wireless RF control to almost any device. The Wired 1-Button Triggered Transmitter sends signals to a receiver (sold separately) up to 500 feet away when triggered by a normally open contact closure. The RF receiver can unlock secure doors, control house lights or garage doors, and/or signal your alarm panel. The Wired 1-Button Triggered Transmitter is compatible with all Seco-Larm receivers, including the 1-Channel RF Receiver, the 2-Channel RF Receiver, and the 4-Channel RF Receiver.