Self-powered doorbell specially developed according to American standards. Which can be connected by wire

The H3 body sensor supports both human movement detection and standing stationary detection. Compared with ordinary human body moving infrared detection sensor, more accurate and more intelligent. It can be installed on the celling of stairwell, classroom, business office, smart hotel and other scene, add the optional condition of "Whether there is a human body in the range" to your intelligent control system, achieve "no one turns off the light/turn off the air conditioning", "someone lights up" and other scenarios to further realize intelligent scene control.