1. Real time temperature .2. Higher/Lower temperature alarm, 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 datas.7. Multi - Supported : you can click to share the device to other users .8. APP: Tuya Smart or Smart lifePlug Type :EU Plug,it applies to Indonesia, , , , and so on.Colour:As shownMaterial:plasticPackage Contents:1 x Wifi Temperature Sensor1 x 3Meter WireOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.