RADEMACHER 9485 Instruction Manual For The Electrical Connection And For Commissioning page 96

17.3 Menu 9.8.5 - Switching the button lock on/off
The button lock is deactivated manually
on the standard display
4 sec.
The button lock is activated manually
on the standard display before the time limit expires
4 sec.
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96
Press and hold for 4 seconds.
Press and hold for 4 seconds if you want to
activate the automatic button lock before the
two minutes expire.
Manual operation of the DuoFern Room Thermostat
9485 is also possible when the button lock is active.
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