© elero GmbH 8 | EN © elero GmbH EN | 9
Explanation of functions
Bidirectional radio system
A bidirectional radio system transmits radio signals to a radio
receiver and enables feedback from the radio receiver to the
transmitter. The radio signal can be sent directly to the target
receiver. If this is not possible then the radio signal is forwarded
via other bidirectional nodes until the signal reaches the target
receiver. The target receiver carries out the command and sends a
conrmation back to the transmitter.
Bidirectional radio operation is only possible if all nodes are
bidirectional. Otherwise, the system is only unidirectional.
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 transmitter. It is also
not possible to transmit radio signals from radio receiver to radio
receiver.
Initial operation
Pressing a button switches on the handheld transmitter and lights
the status display and operating mode display. The handheld
transmitter is in automatic mode when rst switched on.
Note
Do not press the P button until the receivers are in
programming mode. The active channel selects a radio system
during programming. If the receivers are not in programming
mode, the transmitter channel changes to unidirectional mode.
Press the STOP and P buttons simultaneously for 6 seconds
until the status display lights to restore the initial condition.
Status display
A radio signal is indicated by the status display (LED ring around
the STOP button) lighting up. The various colours of the status
display mean:
Status display Meaning
Flashing orange Channel (transmitter) not programmed in any
receiver
Flashing orange
rapidly
Channel (transmitter) in bidirectional program-
ming mode. Operation of already programmed
receivers is not possible.
Every 3 seconds in group programming mode
(even if no button is pressed)
Orange then green Channel (transmitter) is operating bidirectionally
and receiver has received the signal
Orange then ashing
red
Channel (transmitter) is operating bidirectionally
and one of the receivers has not received the
signal
Red then green Channel (transmitter) is operating bidirectionally
and receiver has received the signal, batteries
weak
Red then ashing red Channel (transmitter) is operating bidirectionally
and one of the receivers has not received the
signal, batteries weak
Green Channel (transmitter) is operating unidirection-
ally: Transmit signal is being sent
Green with repeat,
then red (unidirec-
tional)
Channel (transmitter) is deleted
Alternating orange
and green (or red),
then red (bidirec-
tional)
Channel (transmitter) is deleted
Flashing red Batteries weak
The transmitting power or radio range will be reduced by declining
battery output. No more functions are executed and there is no
display if the voltage drops below 2 V.
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