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- The quality of the radio signal received can be checked on the control unit dis-
play (see paragraph 9.2.5 "FIELD METER test") and if in doubt, test before fix-
ing the control unit to the wall. In the case of radio appliances, a change in
position of even just a few centimetres can significantly improve signal recep-
tion and transmission.
- The control units are equipped with a keypad that enables programming dur-
ing installation and daily use of a number of functions, such as activation/ dea-
ctivation of the alarm. If these functions are required, the control unit must be
located in an accessible position, normally close to the main entrance door.
- If a connection to the telephone line is required, ensure that the relative hook-
up is feasible.
- The control units with mains power must be positioned where the relative
electrical connection is possible.
• Keypads
For aesthetic reasons or due to electrical connection requirements, if the con-
trol unit has to be positioned far from the main entrance door, a keypad should
be installed in the vicinity.
If there are other entrance points to the home, a keypad should be installed at
each access point. The keypads can be wall-mounted or portable (as with a
transmitter) if required.
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HSDID11
HSDIW01
HSDIM12
HSDIM11
HSDIS01
HSDIW01
HSDID11
HSDID11
HSSOC
HSSO
• Sirens
In the case of isolated buildings, the installation of at least one outdoor siren is
strongly recommended. This should be positioned in a highly visible location (to
aid as a deterrent) but in a place difficult to access by vandals/burglars.
Although the sirens are adequately protected for outdoor applications, they
should be installed in an area protected against direct rain; the ideal location
would be under a protruding roof or on a terrace/balcony.
The control unit has an incorporated siren, but in large or multi-floor buildings,
the addition of one or more indoor sirens is recommended, located in the main
rooms.
In small apartments, or densely populated areas, an outdoor siren may not be
welcome; in this case, one or more indoor sirens may be used to increase the
deterrent effect.
• Sensors
The choice of the type of sensor to be used is fundamental, as is the relative
position of installation: an incorrect sensor or one positioned in an unsuitable
location may not detect intrusion or may generate improper alarm signals. Each
type of sensor has a different operating principle; refer to the correct selection
criteria for each sensor in Table 3.
HSDIM11
HSDIM12
HSDIM12
HSSI
HSDOM21
HSDIM21
HSDIM22
HSDID11
HSCU1GC
HSCU1C
HSCU1G
HSCU1
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