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2. Passive infrared sensor - Wikipedia

   en.wikipedia.org/wiki/Passive_infrared_sensor

   The PIR sensor is typically mounted on a printed circuit board containing the necessary electronics required to interpret the signals from the sensor itself. The complete assembly is usually contained within a housing, mounted in a location where the sensor can cover the area to be monitored.

3. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_alarm

   PIR sensors identify abrupt changes in temperature at a given point. As an intruder walks in front of the sensor, the temperature at that point will rise from room temperature to body temperature and then back again. This quick change triggers the detection. PIR sensors designed to be wall- or ceiling-mounted come in various fields of view ...

4. Motion detector - Wikipedia

   en.wikipedia.org/wiki/Motion_detector

   A passive infrared detector mounted on circuit board (right), along with photoresistive detector for visible light (left). This is the type most commonly encountered in household motion sensing devices and is designed to turn on a light only when motion is detected and when the surrounding environment is sufficiently dark.

5. Knox Box - Wikipedia

   en.wikipedia.org/wiki/Knox_Box

   A Knox Box is a small, wall-mounted safe that holds building keys for fire departments, emergency medical services, and sometimes police to retrieve in emergency situations. [ 1 ] [ 2 ] The term "Knox-Box" is a brand name for such products produced by the American company Knox Associates, which does business as The Knox Company.

6. Wireless light switch - Wikipedia

   en.wikipedia.org/wiki/Wireless_light_switch

   Wireless light switches eliminate the wire from the light to the switch location. This is useful in remodelling situations where new wiring can be a hassle. Rather than tearing down a wall to gain access to the wires, a wireless switch can be used. This avoids any need to access wires and makes remodelling fast and simple.

7. California man accused of stabbing 8-year-old girl, 2 other ...

   www.aol.com/california-man-accused-stabbing-8...

   A man is being held without bail for allegedly stabbing three of his family members to death, including an 8-year-old girl and teenage boy, Los Angeles County District Attorney Nathan Hochman ...

8. Counter-IED equipment - Wikipedia

   en.wikipedia.org/wiki/Counter-IED_equipment

   Duke Version 3 Vehicle mounted CREW system: Duke V3, [4] manufactured by SRCTec, Inc., is a counter radio-controlled improvised explosive device (RCIED) electronic warfare (CREW) system that was developed to provide U.S. forces critical, life-saving protection against a wide range of threats. It is a field deployable system that was designed to ...

9. Valerie Bertinelli defends posting bikini photo: 'I don't ...

   www.aol.com/valerie-bertinelli-defends-posting...

   Valerie Bertinelli is known for her vulnerability — and clapbacks — and now, the chef is cooking up a combo of both.. On Monday, she took to Instagram to post a mirror picture in bikini ...