Product Type: Air quality sensor Functions: Temperature measuring, humidity measurement, total concentration of Volatile Organic Compounds measuring Power Source: Battery Connectivity Technology: Wireless - ZigBee 3.0 Display: E Ink - monochrome Features: Magnet mount, 1 button Temperature Range: -20 - 60 °C Measurement Accuracy: ±0.1 °C Internet of Things (IoT) Compatible: Yes Hub: Required Hub Compatibility: Aqara Hub Platform: Apple HomeKit Compatible Services: IFTTT Intelligent Assistant: Google Assistant, Alexa Form Factor: CR2450 Required Qty: 2 Battery Lifetime: 1 year Color: White Compliant Standards: ICES-003 Class B, FCC Part 15 B, WEEE 2012/19/EU, RSS-247, Directive 2014/53/EU Width: 7.6 cm Depth: 1.4 cm Height: 4.16 cm Min Operating Temperature: 0 °C Max Operating Temperature: 50 °C Humidity Range Operating: 0 - 95% RH (non-condensing)