Wifi Tuya Smart Indoor Hygrometer Thermometer Temperature And Humidity Sensor Remote Group Vioce Control Alexa And Google Home Description: Material : ABSSize: 70*24*19mmProduct Weight: 30gBattery:LR03-1.5V/AAA*2 Wi-Fi frequency: 2.4GHZ IEEE 802.11 b/g/nTemperature Measure Range: -20°C ~ 60°CHumidity Measure Range: 0% RH ~ 100%RHTemperature Measure Accuracy: ±1°CHumidity Measure Accuracy: ±5%RH Specifications: Smart Link If the environment changes, you can make smart linking. For example, the air conditioner is switched on and automatically turns to the specified temperature when the room temperature exceeds 28. And the humidifier sprays when the humidity is lower than 20% RH. Sharing devices You can share your added devices with your family members so they can also monitor the environment. Selection of temperature unit in APP You can choose or as temperature unit via app. 3rd party voice control Works with Amazon Alexa, Google Assistant. Low battery alarm Battery level can be monitored. Temperature and humidity changes. Temperature and humidity change curve, historical data. Wall mounting, easy to install Package Included: 1*Sensor 1*Instruction 1*Back sticker undefined