Indoor motion detectors

Indoor motion detectors are suitable for commercial premises, offices, public spaces and residential buildings, and for more demanding applications in industrial locations, engineering workshops and garages. The motion detectors can be wall- or ceiling-mounted and they are available in different detection ranges and protection classes, and with an anti-masking function and vandal-proof construction. A passive infrared sensor (PIR) is the most common motion detector type. It can detect rapid changes in the amount of infrared radiation caused by movement by a person or other heat source. A dual-technology detector combines the technologies of two or more detectors, such as infrared and microwave (MW) detectors. Reliability is higher when both detectors must react before an alarm is triggered. When selecting a detector, consider possible house pets and select a pet-tolerant PET detector.

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