Last year, I took a look at some mostly low-cost passive infrared (PIR) motion sensor modules. Then recently, I became more aware of cheap microwave radar motion sensor modules. The popular version of ...

Motion detection has become an essential ingredient in traditional electronic security and now it is being utilized in access control and video surveillance systems. With more applications and so many ...

Six years ago, SnapPower introduced its original Guidelight which cleverly turned plastic outlet covers into LED nightlights without requiring any wiring. A few iterations later, the company’s new ...

We may receive a commission on purchases made from links. Motion detectors might make you think about smart security systems and surveillance, but they can be great and inexpensive tools that you can ...

Originally hailing from Troy, Ohio, Ry Crist is a writer, a text-based adventure connoisseur, a lover of terrible movies and an enthusiastic yet mediocre cook. A CNET editor from 2013 to 2024, Ry's ...

Some motion sensors are based on optical measurement technologies to provide accurate velocity and position measurements without requiring physical contact with the object or surface being monitored.