1. Real-time temperature monitoring. 2. High/low temperature alarm with push notification and buzzer alert. 3. Built-in rechargeable battery: Operates on DC5V power adapter during normal use; backup battery provides several hours of operation during power outage. 4. Temperature unit switchable between Celsius and Fahrenheit via app settings. 5. Temperature calibration available through app settings. 6. View temperature history records anytime—1 record per hour, up to 7 days of data storage. 7. Multi-user sharing supported—invite other users to access the device via the app. 8. Compatible apps: Tuya Smart or Smart Life. Color: As shown. Material: PC + metal. Plug type: EU plug—compatible with Indonesia, Germany, France, Spain, Italy, and other EU-standard countries. Voltage: AC 100–240 V. Slight variations in product appearance and printed text may occur between batches; these do not affect functionality. Package contents: 1 × Wi-Fi temperature sensor 1 × 1-meter wire Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.