The Wireless Keychain Remote allows you to arm and disarm your DSC Security System, as well as perform other keypad functions, from a unit small enough to keep in your pocket. DSC Security Systems receive wireless signals via the 433MHz Spread Spectrum Wireless Receiver or LCD Keypad with Built-In 433MHz Wireless Receiver, which is required for any wireless transmission and is sold separately. Includes 3V CR2025 battery. Basic functions of this remote include: Arm Arm Home Disarm Panic For added safety you can incorporate activation delays into your wireless keychain remote that requires you to press and hold a button for a period of time before its function is initiated. For example, to trigger the arm/disarm function you must press and hold the appropriate button for one second, and for the panic alert, three seconds. If you have X10 incorporated into your home and alarm panel you can control lights or appliances in your home with this remote. Lighting/Appliance control requires the following products: DSC Security Panel Escort Module X10 One-Way Interface Module RJ11 Connecting Cable X10 Compatible Devices