ELRO HIS20S Security & home automation system EXPANDED USERS MANUAL User Manual

Page 11

The PIR Detector adopts a 1/2 AA size 3.6V Lithium

battery which under normal conditions will have typical

life in excess of 4 years. When the battery level drops,

with the PIR in normal mode and the battery cover

fitted, the LED behind the detection window will flash

upon detecting movement. When this occurs the

batteries should be replaced as soon as possible.

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.

PCB Position

Range

1 5m

3 7m

5 10m

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.

Less Sensitive More Sensitive

5. Do not locate the detector in a position where it is

subject to excessive vibration.

6. Ensure that the position selected for the PIR

detector is within effective range of the Smart

Home Box.

INSTALLING THE PIR DETECTORS

Ensure that the system is in Test Mode.

1. Undo and remove the fixing screw from the bottom

edge of the PIR. Carefully pull the bottom edge of

the detector away from the rear cover and then

slide down to release the top clips.