This passive method is not as reliable as "active" motion sensors that either bounce back a radar signal or transmit light to a photodetector in the distance. See network camera. THIS DEFINITION ...

If you're also looking to illuminate pathways, entryways, or doorways, the right motion sensor lights can make all the difference. Today's best options use a combination of powerful brightness ...

this DIY motion trigger for a DSLR is a quick and easy build, and probably loads more fun. The BOM on [Jeremy S Cook]’s build is extremely short – just a PIR sensor and an optoisolator ...

For patients with humeral fractures, early active motion yielded similar postoperative outcomes to conventional sling immobilization. Both cohorts had similar functional and quality of life scores ...