Changing the unit of measure on the PT2L Thermometer:
- When the device is powered Off, press and hold the measurement button until the buzzer symbol appears blinking on the screen.
- Release the button when the symbol appears, the buzzer setting is open. Release the button when the symbol disappears, buzzer setting is closed.
- After setting the buzzer, the LCD will display the current temperature unit. Press and hold the button immediately to enter unit switching state. At this point, symbols for C and F will appear alternatively.
- Release the button when C appears, unit will be set to Celsius. Release the button when F appears, unit will be set to Fahrenheit.