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 ...

The Blink Outdoor 4 comes with the camera, a Sync Module 2 hub, a USB charging cable and adapter, a mounting bracket and adhesive backing, and two AA batteries. The camera's square enclosure measures ...

By Quentyn Kennemer, a writer who helps The Verge's readers save money by surfacing the best tech deals and presenting the latest product recommendations from our experts. He has covered tech and ...

(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.

Blue Line Gen 2 Motion detectors include the passive infrared (PIR), the Quad PIR detectors and the TriTech ... assuring no coverage gaps up to twelve meters (40 feet) away from the detector.

Unique clip-on pet pattern mask. Adjustable 1, 2 and 3-pulse counter virtually eliminates false alarms. Sealed optical chamber protects sensor from insects and air currents. Temperature compensation ...