20
CHOOSING A MOUNTING LOCATION
The PIR Detector is suitable for mounting in dry interior locations only.
The recommended position for a PIR Detector is in the corner of a room mounted at a height between 1.8
and 2m. At this height, the detector will have a maximum range of up to 10m with a field of view of 110°,
subject to the position for the PCB being set in 5. The position of the PCB inside the PIR can be set to 5
different positions to adjust the range of the detector. Setting the PCB in position 3 will reduce the range to
7m approximately, with position 1 providing a range of 5m approximately. The recommended position
setting for the PCB is 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 locate the detector facing a window or where it is exposed to or facing direct sunlight. PIR
Detectors are not suitable for use in conservatories.
2. Do not locate the detector where it is exposed to ventilators.
3. Do not locate 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.
Do not locate the detector in a position where it is subject to excessive vibration.
5. Ensure that the position selected for the PIR detector is within effective range of the system, (refer to
System Installation and Operating Manual).
Note:
When the system is armed, household pets should not be allowed into an area protected by a PIR
detector as their movement would trigger the PIR and generate an alarm.
