LEGRAND Pro 21 7756 31 User manual

Pro 21™
Group radio shutter switch
7756 31
LE00988AA
Characteristics
Power
supply
RF
Frequency
Range
1 CR2032
lithium battery
868.3 MHz
approximately 200 m
in free field
+ 5°C at + 45°C

2
L  50 mm
L =40 mm
L <40 mm
Characteristics (cont.)

3



Safety instructions
This product should preferably be
installed by a qualified electrician.
Incorrect installation or use may
cause electric shock or fire.
Read the instructions before installing.
Take into account the specific installation
location.
Do not open the unit. Legrand products
must only be opened and repaired by
qualified personnel, authorised by
LEGRAND. Unauthorised opening or repair
will cancel all liability, and will invalidate
the guarantee and any right to replacement.
Use only LEGRAND brand accessories.
Replacing the battery

Description
4
LEARN
key
LEARN
indicator
light
Control
keys
Factory settings
When first switching on, press the
control buttons for all blinds or shutters in
the "In One by Legrand" installation.
This facility enables to check the correct
operation and connection of all shutters.
A double press on the LEARN(1) key
cancels this general control function.
(1) Programming or learning key.

5
Operation
Shutter
- Opening
- Shutdown
- Closing
<0,4 s
<0,4 s
<0,4 s
STOP

6
Operation (cont.)
Slat orientation
- Opening
- Closing
>0,4 s
>0,4 s

Transmitter
Group radio shutter switch
E.g.: 7756 31
Operation (cont.)
Example of creation of a general control:
controlling an individual shutter switch using a group shutter switch.
Receiver
Individual radio shutter switch
E.g.: 7756 28
7

8
Operation (cont.)
Transmitter
Open the scenario
Receiver(s)
LEARN indicator
light
Note:
learning is only necessary on the UP key – DOWN and STOP are learned automatically.
Legend
The indicator light
goes out
The indicator light blinks
slowly
The indicator light blinks
rapidly The indicator light
is flashing
LEARN indicator
light Shutter

Operation (cont.)
Save
the scenario
To add several individual switches, repeat the operations and for each receiver.
Add the individual switch
Transmitter Receiver(s)
LEARN indicator
light LEARN indicator
light Shutter
9
Learning is complete: the “Up - Down - Stop” controls can be issued indiscriminately from the individual radio shutter switch
or the group radio shutter switch.

10
Operation (cont.)
Example: modification of the previous general control function by adding an individual shutter switch B.
Transmitter
Group radio shutter switch
E.g.: 7756 31
Receiver (shutter A and B)
Individual radio shutter switch
E.g.: 7756 28
Shutter A
Shutter B