The motion sensor switch circuit can automatically turn on a water sprinkler but you can easily use it as a motion sensor light switch or motion activated alarm too. Before beginning the construction ...

Wireless Caregiver Pager include 1 Portable Receiver and 1 Motion Sensor. Signals connected receivers when motion sensor is detected.Easy to monitor your family getting out of bed or leaving the ...

About 1.5 million bicycles are stolen each year, and only about 20 percent are returned to their owners. A California company, Factory Enhancements Corp., has introduced a motion-sensor alarm system ...

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Megan Wollerton After a ...

Many close-proximity motion detectors use the classic, widely available passive-infrared (PIR) approach, which is effective but has limited sensitivity and adjustability, and can’t “see” through ...