Usage Tips:1. Real time temperature supervision.2. Higher/Lower temperature alarm, push notification and buzzer alert3. Built- in Rechargeable Battery: Daily working need be powered by DC5V power adapter. The backup battery can continue to work for some hours after external power is outage.4. Temperature Unit is switchable (Centigrade or Fahrenheit).Users can switch the Celsius degree to Fahrenheit via App Setting Option.5. Temperature can be calibrated via App setting.6. Check the History Record of temperature anytime, one record per hour, can save 7 days datas.7. Multi -User Supervision Supported: you can click to share the device to other users .8. APP: Tuya Smart or Smart lifeColour:As ShownMaterial:PC+MetalPlug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on.voltage: AC100-240VDue to different batches, there may be differences in product appearance and printed text, which will not affect usePackage Contents:1 * Wifi Temperature Sensor1 * 1 Meter Wire