Tuya WiFi Temperature Senor With Probe Digital LCD Screen Smart Life Thermometer For Fridge Freezer Water Pool Thermostat Remote Alarm This product have CE/FCC Cerfictation Product paramete r 1. App: Tuya Smart/Smart life 2. Powered by: DC5V 1A power adapter (included)EU/US/UK/AU Plug-1.5m Line 3. Built-in rechargeable battery: 3.7V 600mAH 4. Battery standby time: about 6 hours in full charge 5. Alarm Indication: The digital tube number flashes 6. Detecting temperature: -40 to +120 ( -100 to +170) 7. Detecting Humidity: 0% to 100% 8. Temperature accuracy: 0.5 9. Humidity accuracy:1%RH 10. Measurement deviation: 1 3%RH 11. WIFI band: 2.4G ( not support 5G) 12. Buzzer alarm time: default 30 seconds 13. Size: 77.8mm x 77.8mm x 20.8mm (3.06 x 3.06 x 0.82 inch) Feature: The product and app displays the current temperature and humidity value in real time. The detector would alarm and send notification to the user app when the temperature humidity goes above or below the preset value. Temperature humidity history queryable and could be exported to email. APP support multiple devices, and multiple people could share one device Detection accuracy: 1 3%RH Alarm volume: 85db the sensor could not be put into water Temperature and humidity are accurate to decimal places Device beep alarm sound With Waterproof External Probe Can be connected to an external temperature sensor To monitor the temperature of reptile tanks, terrariums, humidors, fish tanks, and refrigerator. About this item WIFI TEMPERATURE HUMIDITY MONITOR WITH DOUBLE ALARM: Connecting with 2.4GHz WiFi(No 5G support), you can remotely monitor the smart humidity sensor. You can set the upper/Lower limit of the alarm via Tuya/Smart life app. The wifi temperature sensor will sound an alarm and send a notification to your phone when beyond preset value REAL-TIME UPDATE & CALIBRATION FUNCTION: This remote temperature monitor is equipped with exceptional microchip and a sensitivity sensor, support Real-time data update. Users can also choose the temperature or humidity report time, such as 1s or 100s.The digital thermometer for home with calibration function, the temp and humidity can be manually calibrated via the App