Infrared Sensor Electronic Guest Welcome Doorbell(White) Filter-Silicone / Sticker User manure x 1

User manure x 1

Dual light source and three kinds of intelligent full-color night vision

Auto-sleep energy saving model

Retractable anti-skid baffle design to prevent the computer from slipping

5) 800/1600 dpi can adjust the speed of cursor

Infrared Sensor Electronic Guest Welcome Doorbell(White) Filter-Silicone / Sticker User manure x 11. Microcomputer technology and automatic human sensitivity 2. Energy saving and easy to use 3. Special sound device, Strong sensitivity, non mislead and anti interference technology make it effectively detect he movement of the human in the detecting area of all environments 4. AC DC operation meets different needs. It is suitable for dwelling houses, tier buildings, multiple apartments, hotels, factories, hospitals or any other places. It does not