Wireless motion sensor lights A wireless sensor works like ... has to be large enough to hold the receiver along with a light ...

(Passive InfraRed sensor) A device used to ... 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.

featuring a smart radar light sensor for automatic motion detection and a slim 6 cm design. Launch date, pricing and availability remain unconfirmed. Xiaomi has introduced the Smart Ceiling Light ...