Marmitek PROGUARD800 Série Guide Utilisateur page 4

For best detection:
x
The sensor must always be in direct line of sight of all windows to be
protected.
x
If mounting on the wall, try to install the sensor directly opposite the
protected window. If this is not possible, adjoining side walls are also a
good location.
x
If mounting on the ceiling, install the sensor 2-3m into the room.
x
Avoid installing in rooms with lined, insulating or sound deadening
drapes.
x
Avoid installing in rooms with closed wooden window shutters inside.
x
Avoid installing in the corners of a room.
The GB843 is best suited to rooms with moderate noise.
The sensor may not consistently detect cracks in the glass, bullets which break
1
through the glass or glass breaking around corners and in other rooms. Glass
break sensors should always be backed up by interior protection.
For best false alarm immunity:
x
Locate the sensor at least 1.2m away from noise sources (televisions,
speakers, sinks, doors, etc.).
x
Avoid rooms smaller than 3m x 3m and rooms with multiple noise
sources.
x
Do not use where white noise, such as air compressor noise, is
present (a blast of compressed air may cause a false alarm).
x
Do not define the zone as 24hr. It is recommended to register the GB843
to a perimeter arming group that arms the perimeter doors and windows of
the premises.
x
Avoid humid rooms – the GB843 is not hermetically sealed. Excess
moisture can eventually cause a short and a false alarm.
Areas to avoid:
x
Glass airlocks and glass vestibule areas
x
Noisy kitchens
x
Residential car garages
x
Small utility rooms
x
Stairwells
x
Small bathrooms
x
Other small acoustically live rooms
For glass break protection in such applications, use shock sensors on the
windows or window frames connected to an US832 universal transmitter.
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