Wireless Thermometer Room Hygrometer Digital Thermometer Accurate Internal Sensor OOTDTY Features: High Precision Sensor: With an accurate and sensitive Sensirion temperature and humidity sensor, which is updated once per second to provide more accurate and faster data. The temperature error can be 0.2 C ( 1 F), the humidity error can be 5%. Smart Alert for Reminder: You can set the temperature and humidity monitoring range. The smart thermometer alerts you when the value in the app is out of monitoring range. And the alarm time interval is 30 minutes. Press the steam button to stop the alarm. If you can't find the thermometer, the device will alert you when you tap the "find it" button on your phone. You can find it conveniently with an alarm sound. The expression will be displayed if the temperature is comfortable, moderate, or overheated. The temperature and humidity sensor uses a high-end 5.0 chip compatible with Bluetooth. You can remotely access the Bluetooth-compatible thermo-hygrometer by connecting it to the sensor blue app. Suitable for bedroom, office, kitchen, etc. You can hang it or put it down. Specification: Material: Plastic Diameter: 83mm/3.3in Package Included: 1x Bluetooth Compatible Thermometer (Battery Included) Note: Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.