IEC 62642-2-71:2015

Alarm systems - Intrusion and hold-up systems - Part 2-71: Intrusion detectors - Glass break detectors (acoustic)

IEC 62642-2-71:2015 defines passive acoustic glass break detectors installed in buildings and provides for security grades 1 to 4 (see IEC 62642-1), specific or non-specific wired or wire-free detectors, and uses environmental classes I to IV (see IEC 62599-1).

Systèmes d'alarme - Systèmes d'alarme contre l'intrusion et les hold-up - Partie 2-71: Détecteurs d'intrusion - Détecteurs de bris de glace (acoustiques)

L'IEC 62642-2-71:2015 concerne les détecteurs de bris de vitre acoustiques passifs installés dans les bâtiments, décrit les détecteurs câblés ou sans fil spécifiques ou non des grades de protection 1 à 4 (voir l'IEC 62642-1) et utilise les classes d'environnement I à IV (voir l'IEC 62599-1).

General Information

• Status: Published
• Publication Date: 06-Oct-2015
• ICS: 13.320 - Alarm and warning systems
• ICS: 19.040 - Environmental testing
• Technical Committee: TC 79 - Alarm and electronic security systems
• Current Stage: PPUB - Publication issued
• Start Date: 07-Oct-2015
• Completion Date: 31-Oct-2015

Overview

IEC 62642-2-71:2015 is an international standard established by the International Electrotechnical Commission (IEC) focusing on alarm systems within the category of intrusion and hold-up systems. Specifically, this standard addresses acoustic glass break detectors, which are passive intrusion detectors designed to identify the sound of breaking glass within buildings.

This standard defines the functional and performance requirements, as well as test methods, for acoustic glass break detectors. It applies to devices installed in various building environments and categorizes detectors based on security grades 1 to 4 and environmental classes I to IV, aligning with related standards IEC 62642-1 and IEC 62599-1. These detectors may be specific or non-specific, wired or wireless, providing flexibility for different security system architectures.

Key Topics

• Event processing and detection performance
  IEC 62642-2-71:2015 specifies how the detectors must process acoustic events indicative of glass breakage, ensuring reliable detection with minimal false alarms. The standard covers time intervals for alarm signals, switch-on delays, and indication protocols.

• Immunity to false alarms
  A critical focus is on preventing false alarms caused by:

  • Small, soft, and hard objects hitting glass surfaces
  • Single frequency sound sources such as whistles or electronic tones
  • Wide band noise, including environmental sounds and mechanical impacts

• Tamper security requirements
  The standard stipulates resistance to tampering by ensuring:

  • Detection of unauthorized access to the detector housing
  • Detection of removal from mounting surfaces
  • Immunity to magnetic interference
  • Resistance to re-orientation and masking attempts

• Electrical and environmental conditions
  Detectors must operate reliably under a range of electrical power supply variations and meet environmental classifications I to IV, which account for conditions such as temperature, humidity, and exposure to dust or water.

• Testing procedures
  The document details laboratory test methods for verifying detection performance, immunity to false alarms, tamper security, electrical characteristics, and environmental resilience. It includes standard setups for basic detection tests, immunity assessments, and tamper resistance validations.

Applications

IEC 62642-2-71:2015 is essential for manufacturers, security system integrators, and facility security managers focused on deploying reliable glass break detection systems within intrusion alarm frameworks. Its practical applications include:

• Residential and commercial property security systems requiring glass break detection as a component of intrusion detection
• Integration into wired or wireless alarm systems for enhanced perimeter protection
• Environments demanding varying security grades, from low (grade 1) to high (grade 4) sensitivity based on risk assessment
• Deployment in diverse environmental conditions ranging from indoor controlled spaces to harsher external or industrial locations

By adhering to this standard, installers and manufacturers ensure that acoustic glass break detectors deliver consistent and dependable protection against unauthorized entry attempts through glass surfaces, minimizing false alarms and enhancing overall security system performance.

Related Standards

• IEC 62642-1: Specifies general requirements for intrusion detectors and sets security grades used by IEC 62642-2-71.
• IEC 62599-1: Defines environmental classes and conditions for electrotechnical devices, relevant for classifying detector operational environments.
• Other parts of IEC 62642 series: Cover additional detector types such as motion detectors, opening contacts, and combined sensors within intrusion detection systems.

For further guidance on design, installation, and verification of intrusion alarm systems, stakeholders should reference this suite of IEC standards to ensure comprehensive coverage of security, reliability, and interoperability.

---

Keywords: IEC 62642-2-71, acoustic glass break detectors, intrusion detection, alarm systems, passive detectors, false alarm immunity, tamper protection, security grades, environmental classification, IEC standards

Standards Content (Sample)

IEC 62642-2-71 ®
Edition 1.0 2015-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Alarm systems – Intrusion and hold-up systems –
Part 2-71: Intrusion detectors – Glass break detectors (acoustic)

Systèmes d'alarme – Systèmes d'alarme contre l’intrusion et les hold-up –
Partie 2-71: Détecteurs d'intrusion – Détecteurs de bris de glace (acoustiques)

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
15 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
Plus de 60 000 entrées terminologiques électrotechniques, en
La recherche avancée permet de trouver des publications IEC
en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et
comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus
projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 62642-2-71 ®
Edition 1.0 2015-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Alarm systems – Intrusion and hold-up systems –

Part 2-71: Intrusion detectors – Glass break detectors (acoustic)

Systèmes d'alarme – Systèmes d'alarme contre l’intrusion et les hold-up –

Partie 2-71: Détecteurs d'intrusion – Détecteurs de bris de glace (acoustiques)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.320 ISBN 978-2-8322-2920-0

– 2 – IEC 62642-2-71:2015 © IEC 2015
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviations . 8
3.1 Terms and definitions . 8
3.2 Abbreviations . 9
4 Functional requirements . 9
4.1 Event processing . 9
4.2 Operational requirements . 11
4.2.1 Time interval between intrusion signals or messages . 11
4.2.2 Switch on delay . 11
4.2.3 Self tests . 11
4.3 Detection . 11
4.3.1 Detection performance. 11
4.3.2 Indication of detection. 12
4.4 Immunity to false alarm sources . 12
4.4.1 General . 12
4.4.2 Immunity to small objects hitting the glass . 12
4.4.3 Immunity to soft objects hitting the glass . 12
4.4.4 Immunity to hard objects hitting the glass . 12
4.4.5 Immunity to single frequency sound sources . 13
4.4.6 Immunity to wide band noise . 13
4.5 Tamper security . 13
4.5.1 General . 13
4.5.2 Resistance to and detection of unauthorised access to the inside of the
detector through covers and existing holes . 13
4.5.3 Detection of removal from the mounting surface . 13
4.5.4 Detection of masking . 14
4.5.5 Immunity to magnetic field interference . 14
4.5.6 Resistance to, or detection of, re-orientation . 14
4.6 Electrical requirements . 14
4.6.1 General . 14
4.6.2 Detector current consumption . 14
4.6.3 Slow input voltage rise and voltage range limits . 15
4.6.4 Input voltage ripple . 15
4.6.5 Input voltage step change . 15
4.7 Environmental classification and conditions . 15
4.7.1 Environmental classification. 15
4.7.2 Immunity to environmental conditions . 15
5 Marking, identification and documentation . 15
5.1 Marking and/or identification . 15
5.2 Documentation . 15
6 Testing . 16
6.1 General . 16
6.2 General test conditions . 16

6.2.1 Standard laboratory conditions for testing . 16
6.2.2 General detection testing environment and procedures . 16
6.3 Basic detection test . 17
6.3.1 General . 17
6.3.2 Basic test source . 17
6.3.3 Basic detection test method . 18
6.4 Performance tests . 18
6.4.1 General . 18
6.4.2 Verification of detection performance . 18
6.4.3 Hole drilling with a diamond hole saw . 19
6.4.4 Glass cutting . 19
6.5 Switch-on delay, time interval between signals, and indication of detection . 20
6.6 Fault condition signals or messages: self tests . 20
6.7 Tests of immunity to false alarm sources . 21
6.7.1 General . 21
6.7.2 Immunity to small objects hitting the glass . 21
6.7.3 Immunity to soft objects hitting the glass . 22
6.7.4 Immunity to hard objects hitting the glass . 22
6.7.5 Immunity to single frequency sound sources . 22
6.7.6 Immunity to wide band noise based using flat steel rulers . 23
6.7.7 Immunity to wide band noise based using ICs . 23
6.8 Tamper security . 24
6.8.1 General . 24
6.8.2 Prevention of unauthorised access to the inside of the detector through
covers and existing holes . 24
6.8.3 Detection of removal from the mounting surface . 24
6.8.4 Resistance to or detection of re-orientation of adjustable mountings . 24
6.8.5 Resistance to magnetic field interference . 24
6.8.6 Detection of masking . 25
6.9 Electrical tests . 26
6.9.1 General . 26
6.9.2 Detector current consumption . 26
6.9.3 Slow input voltage change and input voltage range limits . 26
6.9.4 Input voltage ripple . 27
6.9.5 Input voltage step change . 27
6.9.6 Total loss of power supply . 27
6.10 Environmental classification and conditions . 28
6.11 Marking, identification and documentation . 29
6.11.1 Marking and/or identification . 29
6.11.2 Documentation . 29
Annex A (informative) Example of the setup of the test room . 30
Annex B (normative) Catalogue of standard glass types . 31
Annex C (normative) List of small tools suitable for testing immunity of casing to
attack. 32
Annex D (normative) Dimensions and requirements of a standard test magnet . 33
D.1 Reference documents . 33
D.2 Requirements . 33
Annex E (normative) Immunity test: small objects hit sensitivity . 36
Annex F (normative) Immunity test: soft objects hit sensitivity . 37

– 4 – IEC 62642-2-71:2015 © IEC 2015
Annex G (normative) Immunity test: hard objects hit sensitivity . 38
Annex H (normative) General testing matrix . 39
Annex I (normative) Immunity test: noise sensitivity . 41
Annex J (normative) Performance test setup and alternative performance test setup . 42
J.1 Performance test setup . 42
J.2 Alternative performance test setup . 43
Annex K (informative) Manipulation test: resistance to re-orientation of adjustable
mountings . 45
Bibliography . 46

Figure A.1 – Schematic test room setup . 30
Figure D.1 – Test magnet – Magnet type 1 . 34
Figure D.2 – Test magnet – Magnet type 2 . 35
Figure E.1 – Immunity test setup for small object hit sensitivity . 36
Figure F.1 – Immunity test setup for soft object hit sensitivity . 37
Figure G.1 – Immunity test setup for hard object hit sensitivity . 38
Figure I.1 – Immunity test setup for noise sensitivity . 41
Figure J.1 – Performance test setup . 42
Figure J.2 – Alternative performance test setup . 44

Table 1 – Events to be processed by grade . 10
Table 2 – Generation of indication signals or messages . 10
Table 3 – Performance test requirements . 11
Table 4 – Tamper security requirements . 13
Table 5 – Electrical requirements . 14
Table 6 – Wide band noise simulation based on flat steel rulers . 23
Table 7 – Range of materials for masking tests . 26
Table 8 – Operational tests . 28
Table 9 – Endurance tests . 29
Table B.1 – Standard glass types. 31
Table H.1 – Test and sample matrix . 39
Table J.1 – Performance test setup: glass types, maximum thickness and minimum
dropping height . 43
Table J.2 – Alternative performance test setup: standard glass types, maximum
thickness . 43

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ALARM SYSTEMS – INTRUSION AND HOLD-UP SYSTEMS –

Part 2-71: Intrusion detectors – Glass break detectors (acoustic)

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62642-2-71 has been prepared by IEC technical committee 79:
Alarm and electronic security systems.
This standard is based on EN 50131-2-7-1 (2012) and its IS1 (2014).
The text of this standard is based on the following documents:
FDIS Report on voting
79/511/FDIS 79/527/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 6 – IEC 62642-2-71:2015 © IEC 2015
A list of all parts in the IEC 62642 series, published under the general title Alarm systems –
Intrusion and hold-up systems, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTRODUCTION
This part 2-71 of the IEC 62642 series concerns of intrusion and hold-up alarm systems
(I&HAS) installed in buildings. It includes devices that are installed inside or outside of the
supervised premises and mounted in indoor or outdoor environments. The other parts of this
series of standards are as follows:
Part 1 System requirements
Part 2-2 Intrusion detectors – Passive infrared detectors
Part 2-3 Intrusion detectors – Microwave detectors
Part 2-4 Intrusion detectors – Combined passive infrared / Microwave detectors
Part 2-5 Intrusion detectors – Combined passive infrared / Ultrasonic detectors
Part 2-6 Intrusion detectors – Opening contacts (magnetic)
Part 2-71 Intrusion detectors – Glass break detectors (acoustic)
Part 2-72 Intrusion detectors – Glass break detectors (passive)
Part 2-73 Intrusion detectors – Glass break detectors (active)
Part 3 Control and indicating equipment
Part 4 Warning devices
Part 5-3 Interconnections – Requirements for equipment using radio frequency
techniques
Part 6 Power supplies
Part 7 Application guidelines
Part 8 Security fog devices/systems

– 8 – IEC 62642-2-71:2015 © IEC 2015
ALARM SYSTEMS – INTRUSION AND HOLD-UP SYSTEMS –

Part 2-71: Intrusion detectors – Glass break detectors (acoustic)

1 Scope
This part of IEC 62642 defines passive acoustic glass break detectors installed in buildings
and provides for security grades 1 to 4 (see IEC 62642-1), specific or non-specific wired or
wire-free detectors, and uses environmental classes I to IV (see IEC 62599-1). This
International Standard does not include requirements for passive acoustic glass break
detectors intended for use outdoors.
A detector complies with all the requirements of the specified grade.
Functions additional to the mandatory functions specified in this standard may be included in
the detector, providing they do not adversely influence the correct operation of the mandatory
functions.
This International Standard does not apply to system interconnections.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60068-2-52:1984, Basic environmental testing procedures – Part 2: Tests – Test Kb: Salt
mist, cyclic (sodium, chloride solution)
IEC 62599-1, Alarm systems – Part 1: Environmental test methods
IEC 62599-2, Alarm systems – Part 2: Electromagnetic compatibility – Immunity requirements
for components of fire and security alarm systems
IEC 62642-1, Alarm systems – Intrusion and hold-up systems – Part 1: System requirements
3 Terms, definitions and abbreviations
For the purposes of this document, the terms, definitions and abbreviations given in
IEC 62642-1, as well as the following apply.
3.1 Terms and definitions
3.1.1
glass breakage
physical destruction of a glass pane, which allows intrusion to the monitored area, for
example in doors, windows or enclosures
___________
First edition. This edition has been replaced in 1996 by IEC 60068-2-52:1996, Environmental testing – Part 2:
Tests – Test Kb: Salt mist, cyclic (sodium, chloride solution).

3.1.2
passive acoustic glass break detector
detector that is mounted in the area to be monitored, which detects an airborne acoustic event
created by a glass breakage
3.1.3
basic test source
signal simulator designed to verify the basic function of the detector
3.1.4
incorrect operation
physical condition that causes an inappropriate signal or message from a detector
3.1.5
basic detection test
test whose purpose is to verify the operation of a detector after conditioning
3.1.6
masking
interference with the detector input capability such as an introduction of a physical barrier
(e.g. metal, plastic, paper or sprayed paints or lacquers in close proximity to the detector) or
changing the characteristics of the monitored area (e.g. placing wet newspapers on the
outside of the monitored glass pane)
3.1.7
standard immunity glass pane
glass pane to be used for all immunity tests, where a glass pane is needed, according to
Annex B
3.1.8
reverberation time 60
time taken for the volume of a single sound to decrease by 60 dB
Note 1 to entry: Reverberation time (RT60) at a frequency of 4 kHz shall not be less than 0,5 s and no more than
1 s. If required, reverberation time may be adjusted by installing absorbent panels or surfaces in the room.
3.2 Abbreviations
BTS basic test source
EMC electromagnetic compatibility
RT60 reverberation time 60
4 Functional requirements
4.1 Event processing
Detectors shall process the events shown in Table 1. Detectors shall generate signals or
messages as shown in Table 2.
– 10 – IEC 62642-2-71:2015 © IEC 2015
Table 1 – Events to be processed by grade
Event Grade
1 2 3 4
Intrusion M M M M
a
No stimulus M M M M
Masking Op Op M M
Tamper Op M M M
Low supply voltage Op Op M M
Total loss of power supply Op M M M
Local self test Op Op M M
Remote self test Op Op Op M
M = Mandatory
Op = Optional
a
‘No Stimulus’ is considered to be the quite condition, while no alarm generating stimulus for a detector at
that time applies to the detector input capabilities.

Table 2 – Generation of indication signals or messages
Event Signals or messages
Intrusion Tamper Fault
Intrusion M NP NP
No Stimulus NP NP NP
a
Masking M Op M
Tamper NP M NP
Low supply voltage Op Op M
b
Total loss of power supply M Op Op
Local self test pass NP NP NP
Local self test fail NP NP M
Remote self test pass M NP NP
Remote self test fail NP NP M
M = Mandatory
NP = Not permitted
Op = Optional
a
An independent masking signal or message may be provided instead.
b
Alternatively total loss of power supply shall be determined by loss of communication with the detector.
This permits two methods of signalling a masking event: either by the intrusion signal and fault signal, or by a
dedicated output. Use of the intrusion signal and fault signal is preferable, as this requires fewer connections
between CIE and detector. If multiple events overlap there will be some signal combinations that may be
ambiguous. To overcome this ambiguity it is suggested that detectors should not signal ‘intrusion’ and ‘fault’ at
the same time except to indicate masking. This implies that the detector should prioritise signals, e.g. 1.
Intrusion, 2 Fault, 3 Masking.
When, in Table 1, an event may optionally generate signals or messages, they shall be as shown in Table 2.

4.2 Operational requirements
4.2.1 Time interval between intrusion signals or messages
Wired detectors shall be able to provide an intrusion signal or message not more than 15 s
after the end of the preceding intrusion signal or message.
Wire free detectors shall be able to provide an intrusion signal or message after the end of the
preceding intrusion signal or message within the following times:
Grade 1 300 s
Grade 2 180 s
Grade 3 30 s
Grade 4 15 s
4.2.2 Switch on delay
The detector shall meet all functional requirements within 180 s of the power supply reaching
its nominal voltage as specified by the manufacturer.
4.2.3 Self tests
4.2.3.1 Local self test
The detector shall automatically test itself at least once every 24 h according to the
requirements of Tables 1 and 2. If normal operation of the detector is inhibited during a local
self-test, the detector inhibition time shall be limited to a maximum of 30 s in any period of
2 h.
4.2.3.2 Remote self test
A detector shall process remote self tests and generate signals or messages in accordance
with Tables 1 and 2 within 10 s of the remote self test signal being received, and shall return
to normal operation within 30 s of the remote test signal being received.
4.3 Detection
4.3.1 Detection performance
4.3.1.1 General
The detector shall generate an intrusion signal or message when a simulated or real glass
breakage according to the corresponding requirements of Table 3 is performed.
Table 3 – Performance test requirements
Requirement Grade 1 Grade 2 Grade 3 Grade 4
Verification of detection performance M M M M
Performance test: hole drilling with diamond hole saw Op Op Op M
Performance test: glass cutting Op Op Op M
M = Mandatory
Op = Optional
– 12 – IEC 62642-2-71:2015 © IEC 2015
4.3.1.2 Verification of detection performance
This test will verify the detection performance of a glass breakage according to the supported
conditions claimed by the manufacturer. It will verify the covering range including the
maximum and minimum range as well as the performance of randomly chosen mounting
locations of the detector, according to Annex B for different glass types and sizes claimed to
be supported (types and dimensions) by the manufacturer. A number of standard glass types
and sizes need to be passed by this test according to the corresponding test section.
4.3.1.3 Performance test for hole drilling with a diamond hole saw
This test will verify the detection performance by drilling a hole using a diamond hole saw on
different glass types and dimensions according to the supported conditions claimed by the
manufacturer and Annex B. It will verify if the detector is able to identify and signal the
change of the integrity of the monitored side of the glass pane.
4.3.1.4 Performance test for glass cutting
This test will verify the detection performance by cutting the glass using a standard glass
cutter on different glass types and dimensions according to the supported conditions claimed
by the manufacturer and Annex B. It will verify if the detector is able to identify and signal the
change of the integrity of the monitored side of the glass pane.
4.3.2 Indication of detection
Powered detectors at grades 3 and 4 that include processing capabilities shall provide an
indicator at the detector to indicate when an intrusion signal or message has been generated.
At grades 3 and 4 this indicator shall be capable of being enabled and disabled remotely at
access level 2.
4.4 Immunity to false alarm sources
4.4.1 General
The detector shall have sufficient immunity to false alarm sources if the following
requirements have been met. No intrusion signal or message shall be generated as a result of
the false alarm sources according to each individual test clause.
The tests for this clause will be performed on the standard immunity test glass pane as
defined in section 3.1.7, wherever a glass pane is required.
4.4.2 Immunity to small objects hitting the glass
The detector shall not generate an intrusion signal or message when small objects such as
hail, sand, gravel etc. hit the outside of the monitored glass. The tests are described in 6.7.2.
4.4.3 Immunity to soft objects hitting the glass
The detector shall not generate an intrusion signal or message when soft objects (e.g. a
human fist) hit the outside of the monitored glass. The tests are described in 6.7.3.
4.4.4 Immunity to hard objects hitting the glass
The detector shall not generate an intrusion signal or message when hard objects (e.g.
handlebars of a bicycle) hit the outside of the monitored glass. The tests are described in
6.7.4.
4.4.5 Immunity to single frequency sound sources
The detector shall not generate an intrusion signal or message when various frequencies and
levels of noise (like brakes of a lorry, etc.) are applied to the detector. The tests are described
in 6.7.5.
4.4.6 Immunity to wide band noise
The detector shall not generate an intrusion signal or message when a wide band of
frequencies at the same time, which are close to the frequency of a glass breakage (e.g.
branches of a tree moving against the window) are applied to the detector. The tests are
described in 6.7.6 and 6.7.7.
4.5 Tamper security
4.5.1 General
Tamper security requirements for each grade of a detector are shown in Table 4.
Table 4 – Tamper security requirements
Requirement Grade 1 Grade 2 Grade 3 Grade 4
Resistance to access to the inside of the detector M M M M
Detection of access to the inside of the detector Op M M M
a
Removal from the mounting surface Op M M M
Detection of masking Op Op M M
Magnetic field immunity Op M M M
Magnet type defined in Annex D Type 1 Type 2 Type 2
b
Resistance to or detection of re-orientation Op M M M
Applied torque 2 Nm 5 Nm 10 Nm
M = Mandatory
Op = Optional
a
Required for wire free detectors only
b
Required for detectors mounted on brackets only

4.5.2 Resistance to and detection of unauthorised access to the inside of the
detector through covers and existing holes
All components and means of adjustment and access to mounting screws, which, when
interfered with, could adversely affect the operation of the detector, shall be located within the
detector housing. Such access shall require the use of an appropriate tool and depending on
the grade as specified in Table 4 shall generate a tamper signal or message before access
can be gained.
It shall not be possible to gain access without generating a tamper signal or message or
causing visible damage.
4.5.3 Detection of removal from the mounting surface
A tamper signal or message shall be generated if the detector is removed from its mounting
surface, in accordance with Table 4.

– 14 – IEC 62642-2-71:2015 © IEC 2015
4.5.4 Detection of masking
Means shall be provided to detect inhibition of the operation of the detector by masking
according to the requirements of Table 4. Alternatively, the detector shall continue to operate
normally.
In an I&HAS any masked detectors shall prevent setting of the system.
The maximum response time for the masking detection device shall be 180 s. Masking shall
be signalled according to the requirements of Table 2. The signals or messages shall remain
for at least as long as the masking condition is present. A masking signal or message shall
not be reset while the masking condition is still present. Alternatively the masking signal or
message shall be generated again within 180 s of being reset if the masking condition is still
present.
NOTE From a system design point of view it would be preferable for masked detectors to automatically reset after
the masking condition is removed.
For detectors where detection of masking may be remotely disabled, the detection of masking
shall operate when the I&HAS is unset; it is not required to operate when the I&HAS is set.
4.5.5 Immunity to magnetic field interference
It shall not be possible to inhibit any signals or messages with a magnet of grade dependence
according to Table 4. The magnet types shall be as described in Annex D.
4.5.6 Resistance to, or detection of, re-orientation
When the torque given in Table 4 has been applied to the detector and then removed, the
detector shall be within 5° of its original orientation. Alternatively, when the torque given in
Table 4 is applied, a tamper signal or message shall be generated before the detector has
rotated by 5°.
The manufacturer should indicate if the detector is directional sensitive; if this is the case, this
requirement applies.
4.6 Electrical requirements
4.6.1 General
These requirements do not apply to detectors having type C power supplies. For these
detectors refer to IEC 62642-6. For detectors having an external power supply, the
requirements appear in Table 5.
Table 5 – Electrical requirements
Test Grade 1 Grade 2 Grade 3 Grade 4
Detector current consumption Required Required Required Required
Input voltage range Required Required Required Required
Slow input voltage rise Not required Required Required Required
Input voltage ripple Not required Required Required Required
Input voltage step change Not required Required Required Required

4.6.2 Detector current consumption
The detector's quiescent and maximum current consumption shall not exceed the figures
claimed by the manufacturer at the nominal input voltage.

4.6.3 Slow input voltage rise and voltage range limits
The detector shall meet all functional requirements when the input voltage lies between ±25 %
of the nominal value, or between the manufacturers range limits if greater. When the supply
voltage is raised slowly, the detector shall function normally at the specified range limits.
4.6.4 Input voltage ripple
The detector shall meet all functional requirements during the sinusoidal variation of the input
voltage by ±10 % of nominal, at a frequency of 100 Hz.
4.6.5 Input voltage step change
No signals or messages shall be caused by a step in the input voltage between maximum or
minimum and nominal values of the input voltage.
4.7 Environmental classification and conditions
4.7.1 Environmental classification
The environmental classification is described in IEC 62642-1 and shall be specified by the
manufacturer.
4.7.2 Immunity to environmental conditions
All detectors shall meet the requirements of the relevant environmental class and equipment
class as specified by the manufacturer of the environmental tests described in Table 8 and
Table 9. These tests shall be performed in accordance with IEC 62599-1 and IEC 62599-2.
Impact tests shall not be carried out on delicate detector components such as LEDs or
microphones.
Unless specified otherwise for operational tests, the detector shall not generate unintentional
intrusion, tamper, fault or other sign
...