6
Getting
started...
Planning your Installation
BLY1
Wireless Alarm System
Location of components
Control unit – Location
In choosing a suitable location you should bear in mind:
• The need to reach the control unit easily, within the 30 seconds, when
entering and leaving the premises, ideally passing only one detector.
• The control unit should not be visible from the exterior of the protected
premises.
• Reception of radio signals can be affected by the presence of metal
objects within a few feet of the control unit. (E.g. mirrors, central
heating radiators, garage doors and cars parked in garages on the
opposite side of the wall). Avoid any location which is near (within 60cm)
to these or any other large metal objects.
Having chosen the location, do not mount at this stage.
Door/Window contact detector (MC) – Location
• These parts contain a radio transmitter and should not be sited near to
large metal objects.
• Contains two parts. The larger one (the actual detector) contains the
batteries and the electronics. The smaller part is simply a magnet inside.
• Designed to detect a door or window opening. The detector is usually
mounted next to it on the door or window. For optimum radio range,
they should be mounted as high as possible.
• In most applications, it is fitted to the front door.
Having chosen the location, do not mount at this stage.
Movement/Passive infrared detector (PIR) – Location
• The detector should not be mounted near
to large metal objects or on metal surfaces.
It needs to be mounted on a wall or in corner
at a height of approximately 2-2.5 meters
for the best general coverage in an average
room. The detector has been designed to
avoid false alarms, nevertheless, it is best
to avoid installing the unit where it is facing
directly at sources of heat such as fires
and boilers and always try to avoid facing at
the window. A PIR can look at a radiator but
should not be sited above it.
• Do not site a PIR where its field of view
may be obstructed (e.g. by curtains). Also,
note that PIR works best when sensing a
movement across rather than along their detection beams.
• Allowing for pets – The PIR senses moving body heat. In some cases,
the movement of pets may also be detected. To overcome this it is
recommended that the pets are kept in one specific room out of sight of
a PIR when the system is armed. If required, additional MC (available
as accessories) can then be used to protect the doors and windows of
the room (see section 6 – Extending the System).
Having chosen the location, do not mount at this stage.
Fire
Boiler
Radiator
2m to 2.5m
Window
Wireless Alarm System.indd 7
01/06/2012 10:57
