Material : ABSSize: 70*24*19mmProduct Weight: 30gBattery:LR03-1.5V/AAA*2Wi-Fi frequency: 2.4GHZ IEEE 802.11 b/g/nTemperature Measure Range: -20C ~ 60CHumidity Measure Range: 0% RH ~ 100%RHTemperature Measure Accuracy: 1CHumidity Measure Accuracy: 5%RHSpecifications:Intelligent LinkageWhen the ambient environment change, you can do intelligent linkage. For example, the air conditioner will be on and turn to specified temperature automatically when the room temperature surpass 28. And the humidifier will spray when the humidity is lower than 20% RH.Share devicesYou can share your added devices with your family members, so they can also monitor the ambient environment.Temperature Unit Selection in APPYou can choose or as the temperature unit through app.Third-party Voice ControlWorks with amazon alexa, google assistant.Low battery alarmThe battery level can be monitored.Temperature and humidity changes.Temperature and humidity change curve, historical data.Wall-mounted, easy to installPackage Included:1*Sensor1*Instruction1*Back sticker