1. Real time temperature supervision.<br> 2. Higher/Lower temperature alarm, push notification and buzzer alert<br> 3. 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.<br> 4. Temperature Unit is switchable (Centigrade or Fahrenheit).Users can switch the Celsius degree to Fahrenheit via App Setting Option.<br> 5. Temperature can be calibrated via App setting.<br> 6. Check the History Record of temperature anytime, one record per hour, can save datas.<br> 7. Multi -User Supervision Supported: you can click to share the device to other users .<br> 8. APP: Tuya Smart or Smart life<br> Colour:As Shown<br> Material:PC+Metal<br> Plug Type:UK plug,it applies to Malaysia, the United Kingdom and so on.<br> voltage: AC100-240V<br> Due to different batches, there may be differences in product appearance and printed text, which not affect use<br> Package Contents:<br> 1 * Wifi Temperature Sensor<br> 1 * 1 Meter Wire<br> Only the above package content, other products are not included.<br> 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.