Defensor PH15 - Locking;Unlocking the Keyboard

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5.6 Locking/unlocking the keyboard
The keyboard of the Defensor PH15/PH15A can be locked to prevent unauthorized access to the
stored settings.
PH15
Key lock
• To lock the keyboard, press <ESC> key until (approx. 4 seconds) the
adjacent message appears in the display. The keyboard is locked now.
Each time you press any key the adjacent message appears again.
• To unlock the keyboard, press <ESC> key until (approx. 4 seconds) the
message “Key lock" disappears and the operating display is shown.
PH 15
Act 45%rH H3