WiFi Temperature Sensor Smart Thermometer: Digital Temperature Monitor Gauge with Waterproof External Probe, App Alert & Buzzer Alarm, Rechargeable Battery, for Freezer, Refrigerator, Fish Tank

• REMOTE MONITOR & HIGH/LOW-TEMPERATURE ALARM: No hub required, connect to 2.4GHz wifi(5G is not supported), you can know the temperature data from the sensor in real-time via the Tuya/Smart life app, even if you are on the other side of the earth. The Buzzer will sound and the push notification will be sent to your phone at the same time once the temperature is out of preset range.
• REAL-TIME DATA UPDATE & WIDER APPLICATIONS: With an external waterproof probe to monitor the temperature to ensure a stable connection and low-temperature resistance. The temperature working range can reach: -40°F to +257°F (-40°C to +125°C). Rear-time update without delay, Perfectly suitable for monitoring refrigerator, freezer, laboratory, and machine rooms. No problem with water temperature monitoring.
• BUILT-IN RECHARGEABLE BATTERY & EASY TO INSTALL: The Tuya wireless temperature sensor is powered by a DC5V power adapter with a USB cable. Built-in Rechargeable backup battery, When the external power is out, the battery can continue to work for 6 hours. The smart temperature sensor with a magnet on the back, could be attached to the metal surface directly. You can also install it with the 3M film.
• LINKAGE WITH OTHER DEVICES: Set your smart routine in the app. For instance, when the ambient temperature surpasses 82°F, the air-conditioner opens automatically. As long as the devices are compatible with the Tuya/Smart Life app, you can synchronize more smart devices.
• FREE HISTORY RECORD & WARRANTY: The history record data of temperature can be exported from the App. Indoor temperature sensor supports ℃/℉ reading and Temperature calibration. We provide a 24-month warranty for the Digital Fridge Freezer Thermometer. Please feel free to contact us if you have any questions about the Indoor Thermometer.

- WIFI smart Digital Temperature Meter supports both IOS & Android. WIFI connection supports a 2.4GHz Wi-Fi band with a free “Tuya Smart" or "Smartlife" App to monitor the temperature remotely. -The high-definition LED digital display can be clearly read in the dark, and the soft 360-degree luminous ambient light creates a unique atmosphere for your home. - WiFi Temperature Monitor can be shared by multiple people. You can click to share the device with other users. Product Parameters: App: Tuya Smart/Smart life Powered by: USB Cable Built-in rechargeable battery: 3.7V 600mAH Battery standby time: about 6 hours in full charge Alarm Indication: The digital tube number flashes Detecting temperature: -40℃ to +125℃ ( -40℉ to +257℉) Temperature accuracy: 0.5℃ Measurement deviation: ±1℃ WIFI band: 2.4G ( not support 5G) Buzzer alarm time: default 30 seconds Size: 77.8mm x 77.8mm x 20.8mm (3.06 x 3.06 x 0.82 inch) What’s in the box? 1* WiFi Temperature Detector Alarm Sensor 1 x 1m Sensor Probe 1 x USB Cable(NOT included power adapter)