Concise Design Low PowerOur temperature humidity gauge use 2*AAA Batteries(not include), Alerts will be sent to your phone via app when the battery is low for your sensorWIFI thermometer indoor with low power consumption microprocessor for long standby.App: Tuya Smart/ Smart Life AppWIFI: 802.11b/g/n 2.4GHz( NTOE:5G not supported)Battery: LR03-1.5V/2*AAA Battery (not Included)Temperature Measure Range:-20~60Humidity Measure Range: 0%-100%RHMaterial: ABScolour: WhitePackage Contents:2 x thermometer hygrometerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.