Infrared Human Motion Sensor Switch
A human motion sensor switch is an automated device that detects human presence to control lights or appliances. It operates using Passive Infrared (PIR) to sense body heat or Millimeter Wave (mmWave) for micro-movements (like breathing), and automatically turns power on when movement is detected and off after a set delay. How It Works - PIR (Passive Infrared): Detects the infrared radiation (heat) emitted by the human body. These sensors have a coverage angle typically between 110° and 180° with a range of up to 5 to 7 meters. - Daylight/Light Sensor: Many standard switches include a photocell that prevents the light from turning on during the daytime or in brightly lit spaces, saving energy. - Adjustable Delay: Switches have a built-in timer (often ranging from a few seconds to several minutes) that keeps the light on after motion has stopped, and then turns it off if no further movement is detected Common Applications These switches are ideal for areas where lights are frequently left on or where you need hands-free activation. - Indoor: Hallways, stairwells, bathrooms, closets, garages, and basements. - Outdoor: Security floodlights, porch lights, and entryways.
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