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10. Operation using a key-operated switch/
button
a) General information
A key switch or key button may be installed outside next to the entrance door
and allows the alarm base station to be armed ('externally armed') and disarmed
from outside.
The key switch or button must be equipped with a change-over switch or button
('1 x turn').
b) Preparation
• Lead the connection cable from the key switch/button casing to the
installation location selected for the activation switch. Lay the cables so
that they are not accessible from the outside. Lay the cables in-wall or in
a suitable steel tube.
In addition to the three cables required by the key switch/button,
two further cables can be laid for the sabotage contact (if one is
included in the casing of the key switch/button).
If the key switch/button casing is opened without authorisation,
the alarm base station automatically triggers a sabotage alarm
(regardless of the current status of the alarm base station).
If you wish to install two light-emitting diodes (LEDs) in the key switch/button
casing to indicate the status of the activation switch or alarm base station,
another three (in the case of a shared earthing cable for both LEDs) or four
cables must be laid.
You will therefore require a cable with 8 or 9 wires if you wish to take
advantage of all options.
• The activation switch should not be installed in the immediate vicinity of
large metal objects (radiators, mirrors, aluminium-coated walls/insulation
panelling, metal doors), as this will reduce the wireless range.
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