Keyboard Block - Zanotti DFZ Use And Maintenance Instructions

4.8.3 Keyboard block

To prevent unwanted interventions the keyboard blocking function has been
introduced; activate it starting from the main window, press the key and
then the key , in this way the following window is accessed:
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now press the key , to go to the following window
where entering the password will automatically bring up the following window
which will be the only one that can be displayed and the on/off key will be the
only active key.
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