How to install the battery?
- Insert the battery installation tool into the battery compartment and turn it counterclockwise to open the battery compartment cover.
- Place the button battery inside the battery compartment, making sure that the side with the + sign is facing up, and press the battery into the slot.
- Finally, align the battery compartment cover and turn it clockwise to lock it securely.
How to calibrate it?
- Press and hold the CAL button until the screen displays "CALL," then the screen will show "OU", and the thermometer will calibrate to 0.0° without the need to press any other buttons to adjust the temperature readings.
- It is important to use a mixture of ice and water for calibration.