If you have a security/home automation set up in your home, you can easily add wireless RF control to almost any two devices. Send a signal to the 2-Channel RF Receiver from a 2-Button, 3-Channel Slimline RF Transmitter (sold separately) to unlock secure doors, control house lights or garage doors, and/or signal your alarm panel. Get creative: You can use this RF system to add remote control to almost any electronic devices or systems. The 2-Channel RF Receiver's relay output can be programmed for one of four different modes, depending on the application: 4-second momentary, 1-second momentary, toggle, and latch. Up to 15 different transmitter buttons can be programmed to each channel of the 2-Channel RF Receiver, so every member of your household can access the RF remote control features. Set up multiple RF control devices in your home: A 1-Channel Receiver and a 4-Channel Receiver and corresponding transmitters are also available.