Reference information
10.1 Wireless intruder alarms
Wireless intruder alarms are also often called radio systems, and work by linking detection devices to radio transmitters which communicate with a central control unit. These require little wiring but are generally more expensive to purchase than their hard-wired counterparts. They are economical in terms of installation costs and are becoming increasingly used, so they hold great potential for the future. Wireless signalling systems consist of a combination of radio receivers and transmitters used in conjunction with intruder detectors that are battery powered. A selected system code ensures that the central control unit receiver can only respond to transmitters set to the same code. Accidental ...
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