Chuango PIR-926 motion detector

Solar-Powered, Motion Detector, 315MHz, 8m/110°, 2000LX, 3.7V, 1200mAh, lithium Featured with proprietary infrared technology, fuzzy logic and sophisticated algorithm, the sensor accurately detects for human body movements and effectively cuts down on interference and false alarms with dual detection: infrared and microwave. The solar panel and waterproof housing make it ideal for outdoor use. There is a built-in siren, with adjustable volume, making it a formidable crime deterrent.