Provides high accuracy to ensure a reading you can trust. Accuracy of 0.2°F/0.2?for temperature readings.

Press the power button for approximately 10 seconds until the unit flickers in the shutdown state. Then, release the power key and then quickly press the power key again for a short time to switch between Fahrenheit and Celsius. Finally, turn the power button off and then back on, and the switch is successful.

A "Bi Bi Bi" alarm will sound three times in a row for 10 times to indicate a high temperature, for a total of 30 beeps.

A "Bi Bi Bi" alarm will sound a total of ten times indicating the completion of the temperature in the normal range.