RADEMACHER RolloTron Standard Series Operating And Assembly Manual page 104

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19. Technical Specifications
Power failure
The control LED flashes in the event of a power failure.
The control LED lights up permanently again after pressing
the UP ( s ) or DOWN ( t ) key.
104
Data retention subsequently to power failure
The configured switching times are retained subsequently
to a power failure. As soon as the power supply is restored,
the opening and closing times will be executed again.
However, the times will be offset by the duration of the
power failure.
Example:
◆ Power failure from 19:30 - 19:45 hours.
◆ The closing time has been previously set to 19:30 hours.
◆ The roller shutters will close at 19:45 hours due to
the duration of the power failure.
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