Questions - Answers - hager SC901AX Manual

11. Questions - Answers

Questions
Why can conversation be
"broken" when using the
handset?
What causes the interference
(Larsen effect, crackling, etc.)
that can be heard in the
handset?
Why does the reception quality
vary when I move around with
the handset?
What should I do if I lose the
display on my handset?
What should I do if the handset
does not beep and display
when I put it back on its base?
Can I clean my doorphone?
What should I do if the handset
does not ring during a
communication test?
How should I go about changing
controller connections when it
has already been operating for
several weeks (e.g. to connect
a latch?)
This can happen when you are at the radio reception limit.
The controller cuts off communication when you go beyond
this limit. You should move closer to the controller.
This can happen when the handset is too close to another
handset or the controller. Move the various devices over 3
metres away from each other.
If there is no electromagnetic interference or no obstacle
between the handset and the controller, the "free field" radio
range is roughly 400 m. When the handset is inside the home,
the radio range is less.
Radio wave propagation is
limited depending on the type
and thickness of the walls
or partitions through
which they pass.
Simply recharge the handset on its base.
The time must be reprogrammed
(HANDSET/SETTINGS/TIME menu)
Check the mains power supply or the state of the handset
base battery.
Use soapy water and a soft cloth to clean products whenever
necessary.
Do not use alcohol or acetone to clean them.
• Check the radio range (see Testing the radio range)
and move closer to the controller if necessary.
• Check that the handset is not in silent mode (
displayed).
Simply connect the latch or automatic control system without
disconnecting the power to the controller. When connecting a
latch or position contact, the existing radio links must be
recreated (see Appendix/Creating a radio link between a
handset and several controllers or several outdoor caller unit
call buttons).
Answers
Trees
or bushes
10%
to 30%
reduction
Brick Concrete
30% and breeze-
to 50% block
reduction 50%
to 70%
reduction
G
Plasterboard
and wood
10%
to 30%
reduction
Metal
and metal
cladding
70%
to 90%
reduction
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