8 | EN
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elero GmbH
• Twilight function:
The twilight function causes the roller shutter to move
down either at commencement of twilight or only at dark-
ness.
Interim steps can be set at the twilight threshold controller
and the function can be switched o
ff
entirely.
• Glass breakage function:
The glass breakage sensor, which can be deactivated,
recognises glass breakage on request at vibrations of
the Lumo-868 and will then move the roller shutter all the
way down.
2.2
Bidirectional radio system
A bidirectional radio system transmits radio signals to a
radio receiver and enables feedback from the radio receiver
to the radio transmitter. The radio signal can be sent directly
to the target receiver. If this is not possible, the radio sig-
nal will be routed via other bidirectional participants until it
reaches the target receiver. The target receiver executes
the command and then sends a con
fi
rmation back to the
radio transmitter - at programming and deletion processes.
The prerequisite for the bidirectional radio operation is a
radio-transmitter and a radio-receiver capacity for all prod-
ucts involved. The system thus only works unidirectionally.
2.3
Unidirectional radio system
A unidirectional radio system transmits radio signals to radio
receivers. However, unlike in a bidirectional radio system,
the radio receiver cannot send any message back to the
radio transmitter. It is also not possible to transmit radio
signals from one radio receiver to another radio receiver.
