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2. Motion detector - Wikipedia

   en.wikipedia.org/wiki/Motion_detector

   A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection). Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. They form a vital component of security, automated lighting control, home control, energy efficiency ...

3. Car alarm - Wikipedia

   en.wikipedia.org/wiki/Car_alarm

   A car alarm is an electronic device installed in a vehicle in an attempt to discourage theft of the vehicle itself, its contents, or both. Car alarms work by emitting high-volume sound (often a vehicle-mounted siren, klaxon , pre-recorded verbal warning, the vehicle's own horn, or a combination of these) when the conditions necessary for ...

4. Parking sensor - Wikipedia

   en.wikipedia.org/wiki/Parking_sensor

   The electromagnetic parking sensor (EPS) was re-invented and patented in 1992 by Mauro Del Signore. [2] Electromagnetic sensors rely on the vehicle moving slowly and smoothly towards the object to be avoided. Once an obstacle is detected, the sensor continues to signal the presence of the obstacle even if the vehicle momentarily stops.

5. Passive infrared sensor - Wikipedia

   en.wikipedia.org/wiki/Passive_infrared_sensor

   A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.

6. Defect detector - Wikipedia

   en.wikipedia.org/wiki/Defect_detector

   The first computerized detectors had lights indicating the nature of defect and a numeric display of the associated axle number. Seaboard Air Line was the first railroad to install defect detectors which "spoke" their results over radios carried by train crew starting around 1960, with the first being installed in Riceboro, Georgia , on their ...

7. Home Depot warns consumers are cutting back amid economic ...

   www.aol.com/home-depot-warns-consumers-cutting...

   Still, Decker and other Home Depot execs stressed that fundamentals remain strong and its base is on solid footing. "Our consumer, in particular, remains quite healthy," the CEO stated during ...