【Notes】AN AQARA HUB IS REQUIRED AND SOLD SEPARATELY.(NOTE:Not support hubs from other brands.) Requires a secured 2.4 gigahertz Wi-Fi network connection for Hub M2/ M1S/ E1/M1S Gen2 and Camera Hub G2H Pro/ G2H, and 2.4/ 5 GHz Wi-Fi for Camera Hub G3.(Not Support Wi-Fi 6.Wired connection via Ethernet RJ45 for Hub M2 is also supported).Additionally, to integrate the Aqara Temperature and Humidity Sensor with HomeKit or to enable the skills in Alexa,an Aqara Hub is necessary for binding. 【3-in-1 Environmental Monitoring】Monitor your home’s environment with ease using the Aqara sensor’s 3-in-1 functionality. It accurately measures temperature, humidity, and atmospheric pressure, ensuring you stay informed about your living conditions. All data is tracked in real time and displayed on the Aqara app, allowing you to view trends and make adjustments for a healthier and more comfortable home environment. 【Proximity】 For a sturdy connection and accurate transmission of temperature and humidity data, ensure that the Aqara Temperature and Humidity Sensor is within 400 inches of the Aqara Zigbee hub, and the hub is within the same range from the Wi-Fi router. Additionally, make sure the hub and the router are on the same local area network (LAN). 【Remote Monitoring and Home Automation】When the room temperature reaches above or below a certain threshold, the Aqara Temperature and Humidity Sensor can send a push alert to your phone or trigger the Aqara Hub night light. Additionally, the Aqara Temperature and Humidity Sensor can control other connected devices such as Aqara Smart Plug to ensure that your fan or humidifier maintains a constant level of comfort for you and your family. 【Accurate Measurement】Utilizes high-quality sensor from the industry-leading manufacturer, Sensirion.(Please avoid installing the Aqara Temperature Sensor in environments with extreme temperatures, such as inside a refrigerator.) Note: Please pull the plastic battery tab out before long-pressing the reset button to start the device. If the device disconnects, please ensure the battery has power. If not, please rotate the temperature sensor to remove the battery cover and replace the battery., Weight: 0.03 Pounds, Manufacturer: Lumi United Technology Co., Ltd