The system uses radio signals to link its components together. Wireless technology allows for great flexibility in locating the system’s components; only the controller and the sounders need to be located where they can be plugged into an electrical outlet. Each of the system’s components is designed to perform a specific function within the security system. The Keypad is the part of the system you will be using the most; it is used to arm and disarm the system, and to display messages about sys