3
● The recommended mounting height for
the detector is 2.5m. At this height, the
detector will have a range of approximately
12m. Mounting the detector higher will
increase the detection range but it will be
less sensitive to movement at the
extreme range and also may not be able
to detect movement very close to it.
Tilting the detector head up and down will
havethesameeffect.
● Mount the detector on a firm stable
surface where the logical path of a
person would cut across the detection
pattern. The detector is more sensitive
to movement across its detection pattern
than to movement directly towards it.
Avoid positioning the detector where
there are any heat sources in the detection
area (e.g. heating or tumble drier exhaust
vents etc.). Also avoid highly reflective
surfaces or hanging branches in the
detection area as these can cause false
activation in some weather conditions.
✔
✘
Installing the PIR
NOTE: Before fixing the PIR unit to the
mounting surface, it is advisable to check
that the system works correctly (i.e. that
the PIR and receiver are within radio range
of each other) by temporarily operating the
PIR Detector in the chosen location.
● Open the PIR Detector by inserting a flat
bladed screwdriver into the slot at the base
of the unit and pushing gently to release the
catch and to allow the front cover to be
opened.
Dusk and Time controls
Battery
Day/Night
Operation Mode
Selector Switch
Fixing holes
PIR DETECTOR
Fig. 2
Fig. 3
Fig. 1
● Set the Day/Night operation switch
according to whether you wish the PIR
to detect movement during the day or night.
Day operation is intended for use with a
Libra Plus Chime where movement will trigger
the Chime during the day but not at night.
Night operation is intended for use with a
Switching Receiver for controlling lighting
where movement will activate the lights
only at night and not during the day