1. Real-time temperature monitoring 2. High/low temperature alarm with push notification and buzzer alert 3. Built-in rechargeable battery: Device operates on DC5V power adapter; backup battery provides several hours of operation during power outage 4. Switchable temperature unit (Celsius or Fahrenheit) via app settings 5. Temperature calibration available through app 6. View hourly temperature history records; data can be saved 7. Supports multi-user supervision; share device access with other users via app 8. Compatible with Tuya Smart or Smart Life app Color: As shown Material: PC + Metal Plug Type: EU Plug, suitable for use in Indonesia, Germany, France, Spain, Italy, and other countries with EU plug standards Voltage: AC100-240V Note: Product appearance and labeling may vary slightly between batches, but this does not affect functionality Package Contents: 1 x WiFi Temperature Sensor 1 x 1 Meter Wire Only the items listed above are included; additional products not included Note: Lighting effects and display differences may cause slight variations in color representation. Measurement error allowance: +/- 1-3 cm