2
2. Preparation
2.1 Opening
2.2 Power supply
Open the detector casing by loosening
the screws using a cross-head
screwdriver.
Connect the lithium battery pack according to the arrow.
Test button
Test LED
indicator
lamp behind
lens
Detection
lens
Locking screw
The infrared detector is used for protection inside buildings. Intruders are detected when the infrared radiation associated
with movement varies. The detector also detects freezing temperatures based on a thermostatic principle (a technical alarm
is triggered when the temperature drops below 5°C).
1. Introduction
0
2
4
6
8 10 12
2,2m
16 18 20 22
14
1
0 1 2 3 4 5 6 7 8
9 10 11 12
2,2m
1
0
5
10
15
2
2
0
5
10
15
20
22
1
1
0
1
2
3
4
5
6
7
8
9
10 11 12
1
2 m
• 171-21X/175-21X:
motion detector
(19 fields-of-view, 12 m, 90°) is
designed to protect rooms at risk
(lounge, main bedroom, etc.).
• 172-21X:
corridor detector (9 fields-
of-view, 22 m, 12°) is designed for
unavoidable passageways, and can
be placed facing the entry point to
be protected.
• 173-21X:
curtain detector (9 fields-
of-view, 12 m, 8°) is designed for the
protection of large surfaces (plate
glass windows, garage doors, etc.).
0
2
4
6
8
10 12 m
2,20
12 m
4
8
0
detection zone
(1
st
interruption)
detection zone
(2
nd
interruption)
Alignment arrow
Removable tab
Guarantee sticker
Remove the pre-cut part of the sticker
and stick it to the guarantee certificate in
the user manual supplied with the control
panel. If you are adding the siren to an
existing system, use the guarantee
sticker provided with this product.
171-21X
171-21X
Summary of Contents for 171-21X
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