Determine whether the infrared light emitted by the human body is moving to perceive the existence of the human body in the defense zone. The radio transmission circuit and coding technology solve the problem of signal interference and blocking. A variety of temperature modes can be adjusted, suitable for different scenarios. Wireless transmission of data signals, mobile phone remote monitoring. Ultra-low power consumption, battery life. With low voltage monitoring and prompt function. Regularly send online reports to the host. You can set the comfort zone through the app. When it detects abnormalities in temperature, humidity and atmospheric pressure, it will send an alert to your phone. It is very suitable for the elderly and children If the detected humidity is too low, you can connect the sensor to the smart socket, and then turn on the power of the humidifier. You can connect the sensor to the multi-function controller. If the detected temperature is too high, it can be automatically adjusted on the air conditioner. Features: Name: Multifunctional sensor Material: ABS Communication method: zigbee Dimensions: 61.2X23mm Working temperature: -10~50¡æ Power supply mode: DC3V (AAA*2 battery) Weight: 60 grams