Check the listing for details. Xiaomi Aqara Temperature Humidity Sensor Pressure Zigbee Wireless Smart Apple AU. Condition: Brand New. Listed at 17.66 USD. 1)this is original aqara Smart Air Pressure Temperature For Xiaomi smart home ,Can works with mijia offical APP mi home .2)This item must match the ZIGBEE gateway to use. (like xiaomi gateway 2, gateway 3 / aqara HUB etc..)The Aqara temperature humidity sensor can monitor the temperature, humidity and atmospheric pressure, and can either then make changes to the environment of sending a notification to your phone via the APP. With the ability of matching with other Xiaomi smart devices such as gateway remote control, smart outlet, versatile controller, etc. this sensor is able to help you create a smart home. What is more, this smart sensor is easy to control the temperature and humidity change by viewing the data according to historical records.Features:Wireless connection: ZigBeeReal-time and historical recordsMultiple application: can connect to Aqara smart devices or other ZigBee devicesAutomatically alarmif the temperature, humidity and atmospheric pressure are abnormalDetects the temperature, humidity and atmospheric pressure conditionPowered by a CR2032 button cell ( included )Please download APP "Xiaomi Smart Home" from the Apple Store or Google PlayTemperature detection range: -20 - 60 Deg.C ( + / - 0.3 Deg.C )Humidity detection range: 0 - 100pct RH ( + / - 0.3pct )Atmospheric pressure detection range: 30 - 110KPa ( + / - 120Pa )