INSTALLATION
PASSIVE INFRA RED (PIR)
MOVEMENT DETECTORS
PIR detectors are designed to detect movement in a
protected area by detecting changes in infra-red
radiation levels caused for example when a person
moves within or across the devices field of vision. If
movement is detected an alarm signal will be
generated, (if the system is armed). PIR detectors will
also detect animals, so ensure that pets are not
permitted access to areas fitted with Passive Infra Red
Movement Detectors when the system is armed.
The Detector incorporates a tamper protection feature
to protect against attempts to interfere with the
device. If the battery cover is removed, an alarm will
immediately occur at any time.
The Detector also incorporates a sensitivity
adjustment feature to compensate for situations
where the detector may be affected by environmental
changes, (e.g. insects, air temperature, etc).
To conserve power and maximise battery life the PIR
detector will only detect movement if there has been
no movement detected within the previous 2 minutes.
The PIR Detector is powered by a PP3 Alkaline battery
which under normal conditions will have an expected life
in excess of 1 year. When the battery level drops, with
the PIR in normal operation mode and the battery cover
fitted, the LED behind the detection window will flash.
When this occurs the battery should be replaced as soon
as possible. (Note: in normal operation with the LED
behind the lens will not flash on detection of movement).
Any number of PIR Movement Detectors can be used
with your system, providing they are all coded with the
system House Code and are mounted within effective
radio range of the Solar Siren
.
POSITIONING THE PIR MOVEMENT
DETECTORS
The recommended position for a PIR Movement
Detector is in the corner of a room mounted at a
height between 2 and 2.5m. At this height, the
detector will have a maximum range of up to 12m with
a field of view of 110°.
The Position of the PCB inside the PIR can be set to
5 different positions to adjust the range of the
detection pattern created by the PIR. Setting the
PCB in position 3 will reduce the range to
approximately 9m, with position 1 providing a range
of approximately 6m. The recommended position
setting for the PCB is in position 5.
Detection Zone Pattern for PCB in position 5
When considering and deciding upon the mounting
position for the detector the following points should be
considered to ensure trouble free operation:
1. Do not position the detector facing a window or
where it is exposed to or facing direct sunlight.
PIR Movement Detectors are not suitable for use in
conservatories.
2. Do not position the detector where it is exposed
to draughts.
3. Do not position the detector directly above a heat
source, (e.g. fire, radiator, boiler, etc).
4.
Where possible, mount the detector in the corner of
the room so that the logical path of an intruder would
cut across the fan detection pattern. PIR detectors
respond more effectively to movement across the
device than to movement directly towards it.
5. Do not position the detector in a position where it
is subject to excessive vibration.
6. Ensure that the position selected for the PIR detector
is within effective range of the Control Panel, (refer to
"Testing the Control Panel & Remote Control").
Note: When the system is Armed, pets should not be
allowed into an area protected by a PIR Detector as
