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1 General Information

1.1 Combined PIR + TV detector «PIRS-1-2V» (hereinafter, the Detector) 

is intended for detecting intrusion into a closed protected space and 
generating an alarm message. The Detector provides additional confirmation 
response of intruder detection via TV channel, if emergency lighting in the 
protected room is not less than 15 lx. 

1.2 The Detector is powered from DC power supply with rated output 

voltage 12 V. 

2 Specifications

2.1 Maximal detection range 12 m.
2.2 Warm-up time – not more than 60 s.
2.3 The Detector generates alarm message by relay contacts opening 

and videosignal forming in case of prototype unit (human) moving inside 
the detection zone transversally to its side boundary at a speed range 0.3 
– 3 m/s for a distance not more than 3 m.

2.4 Current consumed by the Detector:
- in «Standby» mode – not less than 17 mA;
- in «Alarm» and «TV-camera adjustment» modes – not more than 150 mA.
2.5 TV-signal parameters:
- PAL standard color video signal;
- TV camera resolution 480 TVL;
- minimum light sensitivity not more than 1 lx;
- maximum light sensitivity not less than 20 000 lx;
- signal-to-noise ratio at least (48 ± 3) dB.
2.6 «Alarm» message duration is not less than 2 s.
2.7 After «Alarm» message generation PIR-channel of the Detector  

switches to enhanced sensitivity mode for the time (2.0±0.5) min.

2.8 The Detector generates message about PIR-channel failure upon 

power supply reduction lower than 9.5 V or in case of PIR-channel amplifier 
breakdown.

2.9 Duration of video signal after «Alarm» message generation is adjusted 

by means of DIP-switches «4» and «5»:

а) 5 s;

b) (30 ± 1) s;
c) (120 ± 3)s;
d) «TV-camera adjustment» – periodical switching of TV-camera for 

(600 ± 20) s.

2.10 The Detector supervises optional lighting circuit control (LCC) with 

voltage on terminals (12 ± 0,5) V, providing the following parameters:

a) «Standby» mode – current consumption is not more than 1.2 mA;
b) «Alarm» mode - current consumption is not less than 10 mA.
2.11 Dimensions – not more than 126 х 70 х 55 mm.
2.12 Weight  – not more than 0.2 kg.
2.13 IP rating IP30.
2.14 Restore time of PIR-channel to standby mode after Alarm message 

generation at enhanced sensitivity mode – not more than 10 s.

2.15 Information content:

а) «Norm»   –   operation in Standby mode;

b) «Alarm»   –  after detection of intrusion into the secured area; 
c) «PIR-channel failure» – at power supply reduction lower than 9.

5+0.5

 V 

or in case of amplifier breakdown;

d) «Overmperature failure» – if ambient temperature is exceeding 

permissible operating temperature;

e) «Warm-up timе» –  when the Detector is starting operation;
f) «TV-camera adjustment» –  in case of TV-camera detection zone 

adjustment.

2.16 Detection angle: 

а)  for PIR-channel in horizontal plane 90

-2

°;

b)  for TV-channel in horizontal plane 60

-2

°.

2.17 The Detector ensures safe operation under the following conditions:

- ambient temperature 263 … 323 K (minus 10 … +50 °С);
-  relative  humidity  up  to  95  %  at  298  К  (+25  °С)  without    moisture 

condensation.

2.18 The Detector in its package during transportation is resistant to 

the following impacts:

- transport jolting with the acceleration  30 m/sec

2

 with impact frequency 

from 10 to 120 impacts/sec or 15000 impacts with the same acceleration;

- ambient temperature  233…323 K (minus 50 … +50 °С);
- relative humidity up to (95 ± 3) at 308 К (+35 °С).

2.19 After transportation under the conditions different to exploitation con-

ditions the Detector shall be ready to operate after a maximum of six hours.

2.20 Stability of PIR-channel operation is provided by the Detector 

resistance to:

- movement of small objects with diameter up to 30 mm and length up 

to 150 mm (small animals);

- background illumination differential up to 6500 lx having capacity of  

1 000 W, located at a distance not less than 1 meter from the Detector.

2.21 The Detector remains operative under changing of direct voltage 

on its power supply terminals in the range of 10…13.2 V.

2.22 Average time to failure in standby mode is not less than 25000 hours.
2.23 Fault probability resulting in false alarm is not more than 0.01 at 

1000 h.

COMBINED PIR + 

TV DETECTOR

«PIRS-1-2V»

INSTALLATION GUIDE

Figure 1 - Detection pattern

12 m

0

90

0

12 m

0

6 m

2,3 m

Any DZ sensing area 
structure

3 Scope of Delivery

3.1 Each Detector unit package contains the items listed in Table 1.
Table  1

Name

QNT

Combined PIR + TV detector «PIRS-1-2V»
Swivel Bracket
Screw 1-3x20.016 
Combined PIR + TV detector «PIRS-1-2V» Installation 

Guide

1 pc.
1 pc.

2 pcs.

1 copy

4 The Detector Design

4.1 The Detector is designed as a single unit with removable cover 

blocking the access to external leading-in sockets and Detector fasteners. 
The Detector construction allows to dismantle it with the possibility of the 
following assembly backwards. 

4.2 The Detector consists of the base with the installed PCB, cover with 

Frenel lens, providing the requested detection zone and TV-camera for 
additional verification of the intruder detection.

4.3 The Detector comprises two-color LED indicator, providing the 

opportunity of availability check and displaying the following information:

- LED indicator blinking red at a frequency 1 Hz during 60 s after 

energizing confirms the Detector is in procces of turning to normal 
operation mode;

- LED indication absence displays «Norm» message generation;

- LED indicator lighting red during the time not less than 2 s informs 

about «Alarm» message generation;

- LED indicator alternate blinking red and green at switched off TV- 

camera represents «PIR-channel failure» message generation;

- LED indicator blinking green at a frequency 2 Hz means that 

«Overtemperature failure»  message is generated;

-  Periodical LED indicator blinking green at a frequency 0.5 Hz informs 

about Detector operation in «TV-camera adjustment» mode.

4.4 On the Detector PCB  the switchgear, comprising five «on-off» DIP-

switches («1» – «5») for the following function execution:

- the Detector sensitivity adjustment;
- settig the Detector testing mode;
- LED indication disabling;
- TV-camera operation mode choosing.
4.1.5 The Detector comprises additional relay for video-system 

supervision.

5 Installation

5.1 The detector is intended for application inside closed premises. 
5.2 When choosing the installation place it is necessary to fulfill the 

following recommendations:

- There must be no windows, air conditioners, space heaters or heating 

radiators as well as incandescent lamps near the Detector;

- In fundamental structures it is advisable to install the Detector on the 

wall or in the corner of the room;

- In the lightweight metal construction building structures one should 

avoid the Detector mounting on walls, it is advisable to select structural 
elements of a construction (columns,  trusses, etc.) as a place of the 
Detector installation;

- To avoid appearance of the deposited frost on a lens and a case  in 

winter time, it is forbidden to install the Detector directly into the openings 
of the entrance gate;

- The detection zone should not be limited by non-transparent objects 

(curtains, houseplants, cabinets, bookcases, etc.), that can create «dead 
zones», preventing the intruder detection;

- In the room with the Detector installed during the period of safeguarding 

the following conditions should be fulfilled:

 

- windows, openings, balcony doors should be closed; 

 

- forced air supply, air conditioners, space heaters or heating 

radiators should be switched off; 

 

- absence of animals or birds.

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