DSC LC-171 Installation Instructions & User Manual
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INSTALLATION INSTRUCTIONS
&
USER MANUAL
P/N: 7131691 ver.B
LC-171
Dual-Tech Motion Sensor
(Dual PIR & Microwave) with Pet
I
mmunity
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1 General .................................................................................................................................................... 3
2 Features................................................................................................................................................... 3
3 Assembly description............................................................................................................................. 4
4 Detection Pattern.................................................................................................................................... 5
5 Selecting mounting location.................................................................................................................. 6
6 Detector Installation ............................................................................................................................... 7
7 Terminal Block Connections................................................................................................................. 9
7.1 Wire Size Requirements..................................................................................................... 9
8 Settings & Adjustments ....................................................................................................................... 10
8.1 Detection beam direction.................................................................................................. 10
8.2 Detection range setting .................................................................................................... 10
8.3 Sensitivity, Range and Pet immunity Adjustment ............................................................. 11
8.4 Indications setting............................................................................................................. 13
9 Operation ............................................................................................................................................... 14
10 Test procedure...................................................................................................................................... 14
11 Specifications ........................................................................................................................................ 15
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1 General
The LC-171 is unique motion detector utilizing four passive infra-red elements and
Microwave technology for use outdoors and in harsh environments.
The LC-171 is designed for outdoor use in the most severe climatic conditions and may also
accommodate pets.
High reliability is achieved by combining both dual tech hardware with highly sophisticated
software and an adaptive coverage area, greatly reducing the possibility of false alarms.
The active elements are comprised of a dual PIR and advanced Microwave detector inside a
stylish, rigid plastic body.
This special optics combined with state of the art microwave Doppler sensor assures elimination
of “false alarms” while maintaining high security standards for the detection of human intruders
into the protected area.
The detection sensitivity and range is controlled by a digital rotary switch allowing 16 calibration
levels, so that the correct detection pattern will be set for every installation.
The LC-171 is designed to protect large areas and can easily be installed on walls or poles in
order to provide a solid area of protection while rejecting interference from birds and small
animals due to the provided pet immunity optics.
2 Features
! Microwave detection based on Doppler concept.
! N.O. & N. C. Relays switched at the same time.
! Pet immunity up 35kg (77 lb.)
! 16 levels of PIR sensitivity adjustment and 3 microwave sensitivity groups.
! Temperature compensation.
! Microcontroller signal processing.
! Front and back tamper protection.
! Audible indication of walk test and intruder detection.
! Unique waterproof sealed plastic design.
! Detection Range: Up to 18m (59ft.)
! Detect human intruders walking or running.
! No maintenance required.
! High RFI/EMI Immunity.
! Protection from: direct sunlight, wind up to 30 m/sec (98 ft/sec), snow and rain, small animals,
removal of the top cover and removal from mounting bracket
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3 Assembly description
The LC-171 is a robust detector which includes a large LED indicator that can be easily observed
from long distances and an optional buzzer to provide indication of intrusion.
Using the supplied mounting bracket, the LC-171 can be easily mounted to walls using mounting
screws and poles using the supplied metal bands.
The LC-171 is combined of three detection elements:
! Upper PIR element
! Lower PIR element
! Microwave element
! The upper PIR element has an adjustable detection height while the other two are fixed.
The following drawing shows all internal elements:
Upper PIR element
Lower PIR element
LED
Terminal Connection Blocks
LED and Buzzer dipswitches
Sensitivity settin
g
Direction Angle Indicato
r
Range setting handle
Range Indication
Tamper switch
Bracket locking screw
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4 Detection Pattern
The LC-171 has a 90° top view PIR and MW detection pattern with over 18m (59 ft.)
detection distance (when installed at 1.2m (4 ft.) above the ground surface).
The LC-171 has an internal rotating housing (which includes the 2 PIR elements and the MW)
that can be adjusted horizontally, so its 90° coverage may vary between 0° and 180°.
The LC-171 can differentiate between pets and human bodies and alert accordingly by
having microwave movement detection combined with two PIR detection beams:.
A. Lower PIR element which is fixed to 18m (59 ft.) range and 60cm (2 ft) above ground level
which helps avoiding pet detection over the entire area.
B. Upper PIR element which has adaptive range between 3 and 18m (10 and 59 ft).
An intrusion is defined by both PIR detection beams being crossed and a Microwave detection
occurring, causing an alarm.
No alarm will be generated if only one of the PIR detection beams is crossed and microwave
detection occurs.
Detection area
Lower PIR element detection pattern
Fixed to 18m range
Microwave detection pattern Detection
No Detection
No pet detection in all
protected area
Upper PIR element detection pattern
Adjustable between 3m and 18m (10 ft to 59 ft)
EN
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