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Introduction
The SLW2400 utilises passive infrared technology to
detect heat radiation of moving human bodies.
Upon detection, the attached lighting load will
illuminate for a user-determined time period.
An integral daylight sensor enables night-only
operation.
Important Information: Light Pollution and
Considerate Lighting
Please be aware of the annoyance over-lighting an area
can cause to your immediate neighbours. Light
pollution caused by incorrectly installing a unit or
over-lighting an area can be limited by carefully
considering the location and position of your unit
before installation. The light spread on all halogen
floodlights can be reduced by angling the floodlight
downwards on the mounting bracket. This will also
concentrate the light on your property and limit the
potential inconvenience of the light shining into your
neighbours windows etc.
1
Please see Selecting a Location for information on
choosing the optimum location for any security light
controlled by this unit.
Top View
A
180º
Side View
2.5m
B
12m
Less
sensitive
More
sensitive
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2
Parts included
• PIR Sensor unit.
• Instruction manual. Please keep safe for future
reference.
• Accessory Pack.
Tools and parts needed
• 3 core flexible cable.
• Electric/hand-held drill & bits.
• Terminal or Electricians screwdriver.
• Large slotted/philips screwdriver.
• Wire cutters.
This product is suitable for wall or ceiling mount.
Lighting loads connected must not exceed maximum
2000W filament/incandescent or 500W fluorescent/low
energy lighting.
Do not attempt to install during wet weather, if you are
suffering from nausea or dizzy spells or on
medication with similar side effects. If in any doubt,
consult a qualified tradesperson or electrician.
Not suitable for use with discharge lighting.
Selecting a location
The motion detector has a number of detection zones,
at various vertical and horizontal angles as shown
(see diagram A).
Dusk
Time
C
Lens Mask
Restrict long detection
Restrict RHS detection Restrict LHS detection
Restrict short detection
D
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3
A moving human body needs to cross/enter one of
these zones to activate the sensor. The best all-round
coverage is achieved with the unit mounted at the
optimum height of 2.5m.
Careful positioning of the sensor will be required to
ensure optimum performance. See diagram A detailing
detection range and direction.
This unit will not detect through glass (e.g. in a glazed
porch).
The sensor is more sensitive to movement ACROSS its
field of vision than to movement directly TOWARDS
(see diagram B). Therefore position the unit so that the
detector 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 (ie 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 sensor. Once normal weather
conditions return, the sensor will resume normal
operation.
Light pollution
To reduce the risk of light pollution, consider the
following when installing the any lights controlled
by this unit.
Position the light to ensure that the light emitted does
not encroach onto neighbouring properties.
Angle the floodlight downward to focus the
illumination onto the ground, not into the sky.
Consider using a lower wattage bulb (200W/300W for
a 500W floodlight) to save energy and reduce high light
output if not required.