New Arrival Original Aqara Mini Smart Temperature and Humidity Sensor. With this sensor you can monitoring your home/office's data by your phoneFeatures :It can real-time detect the temperature and humidity condition. Automatic alarm if the temperature and humidity is abnormal. You can easy view the temperature and humidity change by the data according to all historical recordsNote : 1. This item must match the Xiaomi multifunctional gateway/ Aqara to use. 2. Homekit control requires to use Aqara hub Installation & Effective Range Test: Single press the reset button on the device at your desired position. If the hub makes voice prompts, it indicates that the device can communicate effectively with the hubHow to Add:1.Please add the hub to the app according to the hub Quick Start Guide2.Please open "MiHome", tap"+" in the top right corner to enter"Add Devices(Accessory)"page, select" Temperature and Humidity Sensor" and add it according the app prompts How to Reset: Long Press and multi-function button for about 5s, until the blue light flashes quickly Specifications:APP control : MiHome/ Homekit(Required Aqara Hub)Temperature measuring accuracy : ±0.3°C Humidity measuring accuracy : ±3% Working Temperature : - 20 ~ 60°C Working Humidity : 0 ~ 100 Atmospheric pressure detection range: 30 - 110KPa ( + / - 120Pa )Battery: CR2032Weight : 85g Size : 36 x 36 x 9mm Package:1 x Xiaomi Aqara Temperature Humidity Sensor1 x User Manual1 x CR2032 Battery