Wireless security alarm systems are ideal for installation in a home that wasn’t wired for an alarm system when it was built. Motion sensors, door contacts and window contacts can all be wireless, and not need to be hardwired back to the main control panel. Even the control keypad can be wireless.
The various wireless components use RF (radio waves) to transmit their signals back to the main control panel. The only real disadvantage compared to wired systems is that the wireless components run on batteries, which will need to be replaced once in a while.
These batteries generally last for years, however, and many alarm companies offer service and maintenance plans that will cover the replacement batteries and the installation of them.
The most common wireless alarm components are the following:
Control Panel
This is essentially the “brains” of the alarm system. It’s usually mounted somewhere out of the way, like a closet or the basement. It monitors the signals from all the wireless components, and triggers the alarm (and a call to the monitoring station if the system is monitored) if any of the sensors detect an...