Burglar (or intrusion), alarms are systems designed to detect unauthorised entry into a building or area. They typically consist of a wide range of sensors, a control panel and alerting system via external and internal sirens, and a remote keypad for setting and unsetting. Sensors detect intruders by many methods such as monitoring door and window contacts, by passive infrared motion detectors, vibration detectors or microwaves. Sensors may be directly
wired to a control panel that provides sensor power, or may communicate wirelessly.

Burglar Alarm systems can serve a single purpose of burglar or fire protection, or they can be incorporated to provide both fire and intrusion protection. Intrusion alarm systems may also be combined with Closed-Circuit Television surveillance systems to automatically record the activities of intruders, and may interface to access control systems for electrically locked doors. Systems range from small, self-contained with no communications, to complicated, multi-zoned systems with dual path signalling for police response.

Burglar alarms typically have many functions in order to provide multiple settings for different situations i.e. “Full Set” or “Night Set” with upstairs sensors programmed off or perimeter set.

Burglar alarms are used in residential, industrial, and commercial properties for protection against theft or property damage. Prisons and military facilities use intrusion detection systems for security and control of access.

Our next article will discuss each of the following:

  • Sensor types (passive infrared detector/PIR)
  • Microwave detectors
  • Glass break detectors
  • Smoke, heat and carbon monoxide detectors
  • Vibration (shaker) or inertia sensors
  • Door / Window Contacts