Main_Category: Industrial & Scientific

GONLEN Tuya WiFi Temperature Thermometer Humidity Hygrometer Detector Alarm Sensor Smart Life App Alert Home Thermostat Controller Remote Monitoring (B  Temperature + Humidity)
Note  The device is not waterproof. Please don't put it into water. Product Parameters Powered by  DC5V 1A power adapter (included) Built-in rechargeable battery  3.7V 1100MA Note  the backup battery switch located at circuit board. For the first time use, please remember to open the back cover, then switch on backup battery switch. Battery standby time  about 6 hours in full charge  Alarm Indication  The digital tube number flashes Pairing indication  Green indicator flashes Detecting temperature  -40℃ to +120℃ ( -35℉ to 
Price: $49.99