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

Page 12

2. Carefully drill out the required mounting holes in

the rear cover using 3mm drill according to whether

the unit is being mounted in a corner or against a

flat wall.

Note: Using 1

mounting hole to fulfill corner

mounting installation, while 2

mounting hole for

flat wall installation.

Corner mounting

3. Using the rear cover as a template, mark the

positions of the fixing holes on the wall.

4. Fix the rear cover to the wall using the two 18mm

No.4 screws and 25mm wall plugs, (a 5mm hole

will be required for the wall plugs). Do not

over-tighten the fixing screws as this may distort or

damage the cover.

5. Configure the PIR detector as described below.

Remember that on initial installation that the device

needs to be tested and should therefore be set in

Walk Test Mode.

6. Check that the detector PCB is located and set in

the correct position to provide the required

detection range. To adjust the PCB position,

simply slide it up or down ensuring that the location

legs are aligned with the required position number

marked on the board.

7. To refit the PIR detector to the rear cover and

locate the clips in the top edge into the rear cover.

Push the lower edge of the detector into place and

refit the fixing screw in the bottom edge of the PIR

to secure in position. Do not over-tighten the

fixing screws as this may damage the casing.

SETTING THE PIR DETECTORS

Located on the PCB of the PIR Detector is a

two-position DIP switch (SW2). When conducting the

Walk Test, ensure that the DIP switch SW2 is set as

follows:

SW2 DIP1

DIP2

OFF

1. DIP1 of SW2 is used to configure the PIR Detector

for walk test mode, which allows the operation of

the detector to be checked during installation

without triggering a Full Alarm.

ON Walk Test mode

OFF Normal mode

Note: On initial installation the detector should be

set into Walk Test mode ready for testing. Upon

completion of Walk Test mode, set DIP1 of SW2 to

OFF for normal detection mode.

2. The PIR Detector incorporates an anti-false alarm

feature designed to compensate for situations

where the detector may be affected by

environmental changes, (e.g. insects, air

temperature, etc). This feature is called

“sensitivity detection” and may be selected for high

or low detection.

The recommended setting is for high sensitivity

detection. However, in cases of extreme

environmental problems or if unattributable false

alarms are experienced, it may be necessary to

select low sensitivity detection.