3
4
4. Selecting a Location
• The motion detector has number of detection zones, at various vertical and
horizontal angles as shown (See image “A”).
• The best all-round coverage is achieved with the unit mounted at the optimum
height of 2.5 metres.
• Careful positioning of the sensor will be required to ensure optimum
performance (see image “A” and “B” detailing detection range and direction).
• The sensor is more sensitive to movement ACROSS its field of vision than
to movement directly TOWARDS (See image “B”). Therefore position the unit
so that the sensor looks ACROSS the likely approach path.
• Avoid positioning the sensor where there are any sources of heat in the
detection area (extractor fans, tumble dryer exhausts etc.) including opposite
any other light sources such as other security lights.
• Reflective surfaces (i.e. pools of water or white painted walls) and overhanging
branches may cause false activation under extreme conditions.
• During extreme weather conditions the motion sensor may exhibit unusual
behaviour. This does not indicate a fault with the PIR light controller. Once normal
weather conditions return, the sensor will resume normal operation.
A
B
