Product Overview: Wulian 42 Motion Sensor
The Wulian 42 is a high-sensitivity Passive Infrared (PIR) sensor that monitors environmental heat changes to detect human movement. Unlike the targeted “43 Semi-Directional” model, the 42 is designed for wide-area coverage, making it the primary choice for monitoring living rooms, bedrooms, and large open-plan spaces. It communicates via ZigBee 3.0, serving as a trigger for security alarms or “smart life” scenes like automatic lighting






