8
Passive Infrared (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 triggered, (if the system is armed).
Note:
PIR Detectors will also detect animals, so ensure that pets are not in areas fitted with PIR
Detectors when the system is armed.
Any number of PIR Detectors can be used with your system providing they are all coded with the
system house code, and are mounted within effective radio range.
The PIR Detector is powered by a 9V PP3 alkaline battery. Under normal operating conditions this
will provide an expected life of up to 1 year. When the battery level becomes low the PIR Detector
will flash a red LED behind the lens. When this occurs the battery should be replaced as soon as
possible.
Positioning the PIR Detector
The recommended position for a PIR Detector is in the corner of a room mounted at a height of
between and .5m. At this height, the PIR Detector will have a maximum range of up to 1m with
a field of view of 110°.
12
10
Top View
8
6
4
2
2
0
110°
0
12 10 8
6 4 2 0
2
meters
Side View
4
6
8
10
12
meters
More Sensitive
Less Sensitive
Movement direction and sensitivity
12
10
Top View
8
6
4
2
2
0
110°
0
12 10 8
6 4 2 0
2
meters
Side View
4
6
8
10
12
meters
More Sensitive
Less Sensitive
The position of the PCB inside the PIR can be set to 5 different positions to adjust the range of
the PIR Detector. Setting the PCB in position 3 will reduce the range to 9m approximately, with
position 1 providing a range of 6m approximately. The recommended position setting for the PCB
is in position 5.
5
4
PCB Positions
3
Indicator
2
(positions 1-5)
1
PCB Position
Range
1
6m
3
9m
5
12m
Note:
The range as indicated above refers to the linear distance in front of the PIR Detector.
