Burglar (or intruder), fire, and safety alarms are electronic alarms designed to alert the user to a specific danger. Sensors are connected to a control unit via low-voltage wiring or a narrowband RF signal (Wireless) which is used to interact with a the control panel to acitvate a response. The most common security sensors are used to indicate the opening of a door or window or detect motion via passive infrared (PIR). New construction systems are predominately hardwired for economy. Retrofit installations often use wireless systems for a faster, more economical installation. Some systems serve a single purpose of burglar or fire protection. Combination systems provide both fire and intrusion protection. Systems range from small, self-contained noisemakers, to complicated, multi-zoned systems with colour-coded computer monitor outputs. Burglar alarms are sometimes referred to as alarm systems.
Burglar alarms (or perimeter security systems, perimeter detection systems, perimeter protection, intrusion detection systems and many more terms for the same thing) are divided into:
Home burglar alarms and Industrial burglar and perimeter intrusion detection.
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