If a burglar breaks a window and no sensor is around to detect it, does it make a sound? Maybe it does, maybe it doesn’t — ...

(Passive InfraRed sensor) A device used to detect motion by receiving infrared radiation. When a person walks past the sensor, it detects a rapid change of infrared energy and sends a signal.

System OverviewThis PIR model is an indoor/outdoor dual detection camera which uses both video and infrared sensor to achieve accurate motion detection functionality. It also supports active ...

mmWave Offers Presence Detection, Not Just Motion Detection This is the biggest reason to go for mmWave sensors over PIR ...

VST-892HD is a new generation passive infrared (PIR) motion sensor camera with enhanced transmission speed, capable of capturing high definition images (picture quality of up to 1280 x 720 pixels) to ...

There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors. If you want to put them to work, all you need is a receiver, a network ...

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 ...