Mitsubishi Electric MelcoREMOTE Installation And Operation Manual page 35

The output will remain in the overridden state until either the Back, Up or Down buttons are pressed. At this point the
output will resume its previous state from before the Toggle button was pressed the first time for that output. Any
control logic set up to control the output will resume.
Whilst an output is being overridden its state will not be changed by any control logic.
When overriding an output on an external device it may take a few seconds for the override to take effect.
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