[ Zigbee Bridge/Zigbee Hub/Zigbee Gateway Required ] Sensors must be used in conjunction with Tuya Zigbee Bridge (not supported by other brands of gateways); Without this gateway, our product cannot function [Advanced Motion Sensor] PIR detects human body or animals that are moving, about 120° detection angle,Up to 10m detection distance, can achieve real-time monitoring day or night.Sensitive sensing of human/pet movement. [Built-in Luminance Detection] This feature detects the brightness around your home and displays the lux value directly in the app, keeping you fully aware of the lighting conditions. [Temperature and Humidity Type/No Temperature and Humidity Type ]Optional, you can choose sensors with temperature and humidity detection or without temperature and humidity detection. We recommend that you choose a sensor with TEM and humidity detection, so that you can monitor the temperature or humidity in your home in real time. [Emergency Alert Push Function]If movement is detected, we’ll send alert notifications straight to your phone. This way, you can stay informed about what’s happening at home, even when you’re not there. [History Records Tracking]Easily review past sensor activity by accessing detailed history records whenever you need them. [Intelligent Linkage for a Smarter Life]Connect this device to your Zigbee smart gateway to seamlessly integrate with other Zigbee-enabled smart products in your home, creating a more connected and convenient living experience. [Strong Performance & Ultra-long Standby Time] Experience reliable performance with a long transmission distance, high sensitivity, and a strong network signal. The device runs on two AAA LR03 batteries (not included) and offers an impressive standby time of up to 18 months.