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Alarm Motion Detectors

Alarm Motion Detectors

Alarm Motion Detectors

Security alarm system motion detectors are used to detect movement in a specified area or beam of coverage. Standard alarm sensors use infrared light to detect heat changes, such as when a person (body heat) walks by the infrared sensors. Some combine the infrared with a mico wave sensor and are know as dual tech alarm motion detectors. If a person moves in the range of the motion sensors, the alarm (audible, visual, or silent) is activated. Some motion detection beam sensors use lasers and photoelectric beams. The laser is a light beam shot across to the other side of the room, doorway or passageway. If this light beam is interrupted the unit's alarm signal is activated. These sensors are easy to install for the diy alarm system installer.

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