You can prevent children or others from carelessly using the appliance by disabling the buttons.
Press the p button repeatedly until the ┴ icon is flashing on the screen.
i: Lock
j: Unlock
Press the k or l button to select lock the setting.
Press the OK/CLEAR button to complete the setting.
If no buttons are pressed for about 25 seconds, the display automatically exits the setup mode.
If the display exits the setup mode before the OK/CLEAR button is pressed, the value is not set.
To escape from the setting mode during setup, press the ESC button.