This sensor must match the xiaomi multifunctional gatewayxiaomi multifunctional gateway or Aqara gateway hubAqara gateway hub ( need to be purchased separately ) to use.
Aqara gateway hubAqara gateway hub is required to make this sensor to work with HomeKit.

Main Features:

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 aqara 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 byViewing the Data According to Historical Records.

Specification:

Wireless Connection: ZigBee

Real-time and Historical Records

Multiple Application: Can Connect to Aqara Smart Devices or other ZigBee Devices

Automatically Alarmif the Temperature, Humidity and Atmospheric Pressure are Abnormal

Detects the Temperature, Humidity and Atmospheric Pressure Condition

Please Download APP "mijia APP" from the Apple Store or Google Play

Temperature 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 )

Specification

General

Brand: Aqara

Material: Plastic

Color: Milk White

Dimension and Weight

Product Weight: 0.0110 kg

Package Weight: 0.0570 kg

Product Size (L x W x H): 3.60 x 3.60 x 0.90 cm / 1.42 x 1.42 x 0.35 inches

Package Size (L x W x H): 7.70 x 11.00 x 2.70 cm / 3.03 x 4.33 x 1.06 inches

Package Contents

Package Contents: 1 x Aqara Temperature Humidity Sensor, 1 x Chinese User Manual