Material : ABS <br> <br> Size: 70*24*19mm <br> <br> Product Weight: 30g <br> <br> Battery:LR03-1.5V/AAA*2 <br> <br> Wi-Fi frequency: 2.4GHZ IEEE 802.11 b/g/n <br> <br> Temperature Measure Range: -20&deg;C ~ 60&deg;C <br> <br> Humidity Measure Range: 0% RH ~ 100%RH <br> <br> Temperature Measure Accuracy: &plusmn;1&deg;C <br> <br> Humidity Measure Accuracy: &plusmn;5%RH <br> <br> Specifications: <br> <br> 【Intelligent Linkage】 <br> <br> &nbsp; <br> <br> When 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. <br> <br> &nbsp; <br> <br> 【Share devices】 <br> <br> &nbsp; <br> <br> You can share your added devices with your family members, so they can also monitor the ambient environment. <br> <br> &nbsp; <br> <br> 【Temperature Unit Selection in APP】 <br> <br> &nbsp; <br> <br> You can choose ℃ or ℉ as the temperature unit through app. <br> <br> &nbsp; <br> <br> 【 Third-party Voice Control】 <br> <br> &nbsp; <br> <br> Works with amazon alexa, google assistant. <br> <br> &nbsp; <br> <br> 【Low battery alarm】 <br> <br> The battery level can be monitored. <br> <br> &nbsp; <br> <br> 【Temperature and humidity changes.】 <br> <br> Temperature and humidity change curve, historical data. <br> <br> &nbsp; <br> <br> 【Wall-mounted, easy to install】 <br> <br> &nbsp; <br> <br> Package Included: <br> <br> 1*Sensor <br> <br> 1*Instruction <br> <br> 1*Back sticker <br> &nbsp; <br> &nbsp; <br> <br> &nbsp;