Siting
You can mount the unit either flat against the wall, or in a corner. The area covered by the
detector is shown in Figure 1.
DO mount the unit between 1.8 and 2.4 metres high for the best general coverage in an
average room.
Do NOT mount the unit:
Facing a fire, boiler or window.
Over a radiator.
Near the floor.
Close to or on large metal structures.
Closer than one metre to mains wiring and metal water or gas pipes.
Inside steel enclosures.
Next to electronic equipment, particularly computers, photocopiers or other radio
equipment.
Closer than 30mm to a ceiling (to allow space for dismounting the unit in the future).
Installation
Open the detector by lifting the flap at the top of the case and removing the screw con-
cealed underneath.
Install one 'AA' size 3.6V lithium battery (supplied).
Note: If the transmitter shows a continuously pulsing glow from the activity LED then a fault
has occurred or the battery is totally exhausted. Replace the battery and check that the
activity LED is working normally.
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