Alarm systems - Intrusion and hold-up systems - Part 4: Warning devices

This European Standard includes requirements for warning devices used for notification in intrusion and hold up alarm systems installed in buildings. Four grades of warning device are described corresponding to each of the four security grades given in EN 50131-1. Requirements are also given for four environmental classes covering applications in indoor and outdoor locations as specified in EN 50130-5.
This European Standard does not deal with requirements for compliance with EC regulatory Directives, such as the EMC Directive, Low Voltage Directive, etc. except that it specifies the equipment operating conditions for EMC susceptibility testing as required by EN 50130-4.

Alarmanlagen - Einbruch- und Überfallmeldeanlagen - Teil 4: Signalgeber

Dieses Dokument enthält Anforderungen an Signalgeber, die als Ausgabegeräte in Einbruch- und Überfallmeldeanlagen in Gebäuden verwendet werden. Die Anforderungen entsprechen vier Sicherheitsgraden, die in EN 50131-1 angegeben werden. Weiterhin werden Anforderungen an vier Umweltklassen gestellt, welche die Anwendungen im Innen- und Außenbereich, wie in EN 50130-5 spezifiziert, abdecken. Dieses Dokument befasst sich nicht mit Anforderungen an die Einhaltung regulatorischer EG-Richtlinien, wie z. B. der EMV-Richtlinie, der Niederspannungsrichtlinie usw., ausgenommen, dass sie die Bedingungen für den Betrieb der Ausrüstung hinsichtlich der EMV-Störanfälligkeitsprüfung nach EN 50130-4 festlegt.

Systèmes d’alarme - Systèmes d’alarme contre l’intrusion et les hold-up - Partie 4: Dispositifs d’avertissement

La présente Norme européenne contient des exigences applicables aux dispositifs d’avertissement utilisés pour la notification dans les systèmes d’alarme contre l’intrusion et les hold-up installés dans les bâtiments. Quatre grades de dispositifs d’avertissement sont décrits, correspondant aux quatre grades de sécurité indiqués dans l’EN 50131-1. Les exigences sont également données pour les quatre classes d’environnement qui couvrent les applications situées à l’intérieur et à l’extérieur, tel que spécifié dans l’EN 50130-5.
La présente Norme européenne ne couvre pas les exigences de conformité aux directives réglementaires CE, comme la directive CEM, la directive Basse Tension, etc., mais elle spécifie les conditions de fonctionnement des matériels en ce qui concerne les essais de susceptibilité CEM comme cela est exigé par l’EN 50130-4.

Alarmni sistemi - Sistemi za javljanje vloma in ropa - 4. del: Opozorilne naprave

Ta evropski standard vključuje zahteve za opozorilne naprave, ki se uporabljajo za obveščanje v sistemih za javljanje vloma in ropa, vgrajenih v stavbah. Opisani so štirje razredi opozorilnih naprav, ki ustrezajo štirim varnostnim razredom iz standarda EN 50131-1. Zahteve so podane tudi za štiri okoljske razrede, ki zajemajo načine uporabe na notranjih in zunanjih lokacijah, kot je določeno v standardu EN 50130-5.
Ta evropski standard ne obravnava zahtev glede skladnosti z regulativnimi direktivami ES, kot je direktiva o elektromagnetni združljivosti, direktiva o nizki napetosti itd., določa pa pogoje za uporabo opreme za preskušanje občutljivosti v okviru elektromagnetne združljivosti, kot to zahteva standard EN 50130-4.

General Information

Status
Published
Publication Date
08-Aug-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
25-Jul-2019
Due Date
29-Sep-2019
Completion Date
09-Aug-2019

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SLOVENSKI STANDARD
SIST EN 50131-4:2019
01-september-2019
Nadomešča:
SIST EN 50131-4:2009

Alarmni sistemi - Sistemi za javljanje vloma in ropa - 4. del: Opozorilne naprave

Alarm systems - Intrusion and hold-up systems - Part 4: Warning devices
Alarmanlagen - Einbruch- und Überfallmeldeanlagen - Teil 4: Signalgeber

Systèmes d’alarme - Systèmes d’alarme contre l’intrusion et les hold-up - Partie 4:

Dispositifs d’avertissement
Ta slovenski standard je istoveten z: EN 50131-4:2019
ICS:
13.310 Varstvo pred kriminalom Protection against crime
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
SIST EN 50131-4:2019 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50131-4:2019
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SIST EN 50131-4:2019
EUROPEAN STANDARD EN 50131-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2019
ICS 13.320 Supersedes EN 50131-4:2009
English Version
Alarm systems - Intrusion and hold-up systems - Part 4: Warning
devices

Systèmes d'alarme - Systèmes d'alarme contre l'intrusion et Alarmanlagen - Einbruch- und Überfallmeldeanlagen - Teil

les hold-up - Partie 4: Dispositifs d'avertissement 4: Signalgeber

This European Standard was approved by CENELEC on 2018-12-31. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50131-4:2019 E
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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
Contents Page

European foreword ................................................................................................................................. 5

1 Scope ............................................................................................................................................... 6

2 Normative references ..................................................................................................................... 6

3 Terms, definitions and abbreviations ........................................................................................... 7

3.1 Terms and definitions ....................................................................................... 7

3.2 Abbreviations .................................................................................................... 8

4 General considerations .................................................................................................................. 8

5 Requirements .................................................................................................................................. 8

5.1 Functional ......................................................................................................... 8

5.1.1 Response .............................................................................................. 8

5.1.2 Acoustic ............................................................................................... 10

5.1.3 Timing.................................................................................................. 11

5.2 Tamper ........................................................................................................... 11

5.2.1 Protection ............................................................................................ 11

5.2.2 Detection ............................................................................................. 12

5.3 Environmental ................................................................................................ 13

5.4 EMC Susceptibility .......................................................................................... 13

5.5 Safety ............................................................................................................. 13

5.6 Electrical ......................................................................................................... 14

5.6.1 Connections ........................................................................................ 14

5.6.2 Operating parameters .......................................................................... 14

5.6.3 Self-powered ....................................................................................... 14

5.7 Self test requirements ..................................................................................... 16

5.7.1 Local self test ....................................................................................... 16

5.7.2 Remote self test ................................................................................... 17

5.8 Marking .......................................................................................................... 17

5.9 Documentation ............................................................................................... 17

6 Test section ...................................................................................................................................17

6.1 General .......................................................................................................... 17

6.2 Functional ....................................................................................................... 18

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SIST EN 50131-4:2019
EN 50131-4:2019 (E)

6.2.1 General conditions ............................................................................... 18

6.2.2 General mounting ................................................................................ 18

6.2.3 General testing procedures .................................................................. 18

6.3 Reduced functional test .................................................................................. 18

6.3.1 Purpose ............................................................................................... 18

6.3.2 Conditions ........................................................................................... 18

6.3.3 Mounting .............................................................................................. 18

6.3.4 Stimuli.................................................................................................. 18

6.3.5 Measurement ....................................................................................... 18

6.3.6 Pass/Fail criteria .................................................................................. 18

6.4 Response to events ........................................................................................ 19

6.4.1 Response to trigger command ............................................................. 19

6.4.2 Response to loss of trigger command interconnection integrity ........... 19

6.4.3 Maximum sound duration limit ............................................................. 20

6.5 Acoustic output level ....................................................................................... 20

6.5.1 Purpose ............................................................................................... 20

6.5.2 Conditions ........................................................................................... 20

6.5.3 Mounting .............................................................................................. 20

6.5.4 Stimuli.................................................................................................. 20

6.5.5 Measurement ....................................................................................... 20

6.5.6 Pass/Fail criteria .................................................................................. 20

6.6 Tamper ........................................................................................................... 21

6.6.1 Opening by normal means ................................................................... 21

6.6.2 Protection ............................................................................................ 21

6.6.3 Detection of opening by normal means ................................................ 22

6.6.4 Detection of removal from mounting .................................................... 22

6.6.5 Detection of penetration ....................................................................... 23

6.7 Electrical tests ................................................................................................ 23

6.7.1 Operating voltage range and current consumption .............................. 23

6.7.2 Slow rise of remote power source voltage ........................................... 24

6.7.3 Remote power source voltage step change ......................................... 24

6.7.4 Storage device standby time ................................................................ 25

6.7.5 Storage device operating time ............................................................. 25

6.7.6 Storage device recharge rate ............................................................... 26

6.7.7 Loss of remote power .......................................................................... 27

6.7.8 Remote power short circuit protection .................................................. 27

6.7.9 Storage device monitoring – Low residual energy ................................ 28

6.7.10 Storage device monitoring – Failure .................................................... 28

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SIST EN 50131-4:2019
EN 50131-4:2019 (E)

6.8 Marking .......................................................................................................... 29

6.8.1 Purpose ............................................................................................... 29

6.8.2 Conditions ........................................................................................... 29

6.8.3 Mounting .............................................................................................. 29

6.8.4 Stimuli.................................................................................................. 29

6.8.5 Measurement ....................................................................................... 29

6.8.6 Pass/Fail criteria .................................................................................. 29

6.9 Documentation ............................................................................................... 29

6.9.1 Purpose ............................................................................................... 29

6.9.2 Conditions ........................................................................................... 29

6.9.3 Mounting .............................................................................................. 29

6.9.4 Stimuli.................................................................................................. 30

6.9.5 Measurement ....................................................................................... 30

6.9.6 Pass/Fail criteria .................................................................................. 30

6.10 Environmental ................................................................................................ 30

6.10.1 Impact.................................................................................................. 30

6.10.2 Further environmental tests ................................................................. 30

Annex A (normative) Sound level test for warning devices ............................................................33

A.1 General ...........................................................................................................................................33

A.2 Mounting arrangements ...............................................................................................................33

A.3 Instrumentation .............................................................................................................................33

A.4 Background noise level ...............................................................................................................33

A.5 Measurement of sound level .......................................................................................................33

Annex B (informative) Example remote test protocol ......................................................................36

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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
European foreword
This document (EN 50131-4:2019) has been prepared by CLC/TC 79, “Alarm systems”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2019-12-31
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2021-12-31
conflicting with this document have to be
withdrawn
This document supersedes EN 50131-4:2009.
This revision includes changes:
— to remove technology specific terminology from requirements;
— to clarify the scope and detail of requirements;
— to clarify the application and methodology of tests;

— to align requirements and testing for tamper security with other parts of the EN 50131-x suite of

product standards;

— to align requirements for environmental testing with other parts of the EN 50131-x suite of product

standards;
— to improve editorial presentation.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
1 Scope

This document includes requirements for warning devices used for notification in intrusion and hold up

alarm systems installed in buildings. Four grades of warning device are described corresponding to

each of the four security grades given in EN 50131-1. Requirements are also given for four

environmental classes covering applications in indoor and outdoor locations as specified in

EN 50130-5.

This document does not deal with requirements for compliance with EC regulatory Directives, such as

the EMC Directive, Low Voltage Directive, etc. except that it specifies the equipment operating

conditions for EMC susceptibility testing as required by EN 50130-4.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

EN 50130-4, Alarm systems — Part 4: Electromagnetic compatibility — Product family standard:

Immunity requirements for components of fire, intruder, hold up, CCTV, access control and social

alarm systems
EN 50130-5, Alarm systems — Part 5: Environmental test methods

EN 50131-1, Alarm systems — Intrusion and hold-up systems — Part 1: System requirements

EN 50131-6, Alarm systems — Intrusion and hold-up systems — Part 6: Power supplies

EN 60068-2-75, Environmental testing — Part 2-75: Tests — Test Eh: Hammer tests (IEC 60068-2-

75)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)

EN 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications (IEC 61672-1)

EN 62262, Degrees of protection provided by enclosures for electrical equipment against external

mechanical impacts (IK code) (IEC 62262)
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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
audible alarm
distinctive sound generated in response to an alarm condition
3.1.2
warning device
device that gives an audible alarm in response to a notification
Note 1 to entry: A warning device may also provide alert indications.
3.1.3
external warning device

warning device designed to be located outside the supervised premises which gives an external

audible alarm in response to a notification
3.1.4
internal warning device

warning device designed to be located within the supervised premises which gives an internal audible

alarm in response to a notification
3.1.5
enclosure

housing that contains the warning device components, normally comprises a backplate and a cover

3.1.6
external power source

energy supply external to the I&HAS which may be non-continuous, e.g. mains supply

3.1.7
reference point

centroid of the mounting face of the warning device enclosure projected onto the mounting surface

3.1.8
remote power source

electrical supply, which is not a part of the warning device, meeting the requirements of EN 50131-6

3.1.9
remotely powered warning device
warning device that does not incorporate its own power source
3.1.10
self-powered warning device
warning device that incorporates its own power source
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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
3.1.11
standby condition

operational mode of a self-powered warning device during which it is powered from its internal storage

device, whilst not notifying an alarm condition
3.1.12
storage device – failure

condition of the storage device where it is no longer able to power the warning device

3.1.13
storage device – low residual energy

condition specified by the warning device manufacturer which indicates that the storage device is

nearly discharged
3.1.14
trigger command
notification signal or message passed to the warning device
3.1.15
visible damage

damage that would be visible to a person of normal eyesight viewing at a distance of 2 m under an

illumination level of 2 000 lx
3.2 Abbreviations
For the purposes of this document, the following abbreviations are used:
CIE - Control and indicating Equipment
I&HAS - Intrusion and Hold-up Alarm System(s)
WD - Warning Device
4 General considerations

This European Standard considers two different categories of warning device, remotely powered and

self-powered devices.

Self-powered warning devices are classified into one of four types, dependent upon the recharge

characteristics of the storage device and the source of recharge power. These four types are defined

in Table 9.
5 Requirements
5.1 Functional
5.1.1 Response

Depending upon the grade, warning devices shall have the functionality as defined in Table 1. Where

a function is provided, the warning device shall operate in accordance with the requirements of

Table 2.

NOTE Requirements for the interconnections are given in the specific interconnection standard(s).

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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
Table 1 — Warning device functionality
Self-powered Remotely powered
Function Grade Grade
1 2 3 4 1 2 3 4
Trigger command M M M M M M M M
Tamper signal or
M M M M M M M M
message output
Fault signal or message
b b
Op M M Op Op Op Op
output
Monitor of remote power M M M M Op Op Op Op
Monitor integrity of trigger
Op Op M M Op Op Op Op
command interconnection
b b
Local self test Op Op M M Op Op Op Op
Remote test input Op Op Op M Op Op Op Op
Key
Op Optional
M Mandatory

Remote power monitoring only applies to warning devices with a remote power source and an internal storage

device, see types X and Z as defined in Table 9.
Mandatory for type W devices as defined in Table 9.
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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
Table 2 — Warning device responses
Self-powered WD Remote powered WD
Tamper Fault Tamper Fault
Event
Audible Audible
signal or signal or signal or signal or
alarm alarm
message message message message
Trigger command M NP NP M NP NP
Tamper event at
Op M NP Op M NP
the WD
Loss of remote
b b b
Op Op Op N/A Op Op
power source
Loss of trigger
command
c c c
Op Op Op Op Op Op
interconnection
integrity
Local self test pass NP NP NP NP NP NP
Local self test fail NP NP M NP NP M
Remote self test
d d
NP NP M NP NP M
pass
Remote self test
d d
NP NP M NP NP M
fail
Key
M Mandatory
Op Optional
NP Not Permitted
N/A Not applicable

The provision of a fault signal or message is not mandatory for all grades, see Table 1.

At least one of these actions shall occur at the warning device. For grade 3 and grade 4 warning devices, if

the loss of remote power source can be shown to be caused by a fault then a fault signal shall be generated,

otherwise a tamper signal shall be generated.

At least one of these actions shall occur at the warning device. For grade 3 and grade 4 warning devices, if

the loss of trigger command integrity can be shown to be caused by a fault then a fault signal shall be

generated, otherwise a tamper signal shall be generated.

The response to a remote test pass shall be different from the response to a remote test fail.

5.1.2 Acoustic

A warning device shall produce a varying sound output, which is distinctive and likely to attract

attention, with a mean acoustic output of no less than that defined in Table 3 at 1 m from the mounting

surface of the warning device throughout the manufacturer’s specified operating voltage range.

Acoustic output levels as measured in accordance with Annex A, taken at 30° intervals in the

horizontal plane, shall not be below the minimum individual level defined in Table 3 at 1 m from the

mounting surface. The mean acoustic output shall be calculated by the arithmetic sum of these values

divided by the number of measurements. For surface mounted devices (e.g. wall mounted devices)

this is required at angles between 15° and 165° to the surface, and for pole mounted devices it is for

the full 360°.
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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
Table 3 — Acoustic output levels
Internal warning device External warning device
Minimum mean acoustic
80 dB(A) 100 dB(A)
output level
Minimum individual
75 dB(A) 95 dB(A)
acoustic output level

NOTE 1 It is considered restrictive to define exact waveforms of acceptable alarm tones, therefore the only

tests that can be applied are on the acoustic output level and that the tone is varying.

NOTE 2 Voice alarms are deemed to meet the requirements of a varying sound output.

NOTE 3 A warning device may also provide audible alert indications providing such indications are easily

distinguishable from an alarm.

NOTE 4 The acoustic output (sound level and/or frequency) of a warning device may be subject to variation

depending on local or national requirements.
5.1.3 Timing
A trigger command exceeding 400 ms shall be processed by the warning device.

A warning device shall commence its audible alarm within 1 s of receiving a valid trigger command to

do so. It shall cease its audible alarm within 1 s of receiving a valid cancellation of the trigger

command.
The warning device shall sound between these signals.

The maximum time for which an audible warning device shall sound continuously is 15 min.

NOTE 1 For remote powered warning device, where applicable, this requirement may be achieved by the CIE.

NOTE 2 The duration of the operational period of a warning device may be subject to variation depending on

local or national requirements

A tamper signal or message shall be generated within 1 s of a tamper condition occurring.

There shall be a response to loss of remote power source or loss of trigger command interconnection

integrity according to Tables 1 and 2, within 10 s of the fault occurring.

A response to local test fail according to Tables 1 and 2 shall occur within 10 s of detection of the fault.

5.2 Tamper
5.2.1 Protection

All component parts shall be housed in an enclosure meeting the impact requirements of the

appropriate grade given in Table 4.

Provision shall be made to allow adequate fixing of the enclosure to the mounting surface.

Table 4 — Enclosure construction
Internal warning device External warning device
Grade
1 2 3 4 1 2 3 4
Resistance to impact
06 06 07 08 07 07 08 08
(IK rating according to EN 62262)
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SIST EN 50131-4:2019
EN 50131-4:2019 (E)

The cover of the enclosure shall be secured with one or more screws or bolts or alternatively by a

mechanical lock. The cover of the enclosure shall be opened only with the use of one or more keys or

suitable tools.

It shall not be possible, without causing visible damage, to gain access to any electrical connections,

or elements providing adjustment, without first generating a tamper signal or message.

When the unit is mounted normally it shall not be possible, without causing visible damage, to

introduce a tool, as defined in Table 5, such that the operation of the warning device could be

adversely affected.
Table 5 — Tool dimension for tamper protection
Dimensions in millimetres
Grade 1 Grade 2 Grade 3 Grade 4
Steel rod as specified in
2,5 2,5 1 1
EN 60529, with diameter

Flat bar dimensions (±0,05 mm) 10 × 1 × 300 10 × 1 × 300 5 × 0,5 × 300 5 × 0,5 × 300

5.2.2 Detection

The tamper detection requirements for warning devices relative to the security grade are given in

Table 7.

Opening the warning device enclosure by normal means shall generate a tamper signal or message.

The enclosure shall not permit the introduction of a tool of dimension as specified in Table 5 and

Table 6, to defeat the tamper detection.
Table 6 — Tool dimension for tamper detection
Dimensions in millimetres
Grade 1 Grade 2 Grade 3 Grade 4
Steel wire of tensile strength
650 MPa - 825 MPa and NA NA Ø 1 × 300 Ø 1 × 300
dimensions
for example, welding rod wire meeting this specification is commonly available.

Attempts to remove the warning device from its mounting surface for a distance defined in Table 8 in a

perpendicular direction shall generate a tamper signal or message according to Table 7.

It shall not be possible to defeat the removal from mounting detection by sliding a

25 mm × 1 mm × 300 mm blade, or by use of pliers (of thickness 5 mm and reach 150 mm), between

the mounting surface and the warning device.

The warning device shall include means to detect penetration of the enclosure, which could cause

mis-operation of the warning device, as specified in Table 7, when a hole of 4 mm is made in the

enclosure.
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SIST EN 50131-4:2019
EN 50131-4:2019 (E)
Table 7 — Tamper detection
Internal warning device External warning device
Security grade
1 2 3 4 1 2 3 4
Opening by normal means M M M M M M M M
Removal from mounting – Op M M M Op M M M
Wire free WD
Removal from mounting – Op Op M M Op Op M M
Wired WD
Detection of penetration of
Op Op Op Op Op Op Op M
enclosure
Key
Op Optional
M Mandatory
Table 8 — Removal from mounting
Grade 1 Grade 2 Grade 3 Grade 4
Maximum distance before tamper
a a
10 mm 10 mm 5 mm 5 mm
detection
If removal from mounting detection is provided.
5.3 Environmental

The environmental classification shall be as described in EN 50131-1. All the relevant environmental

tests shall be carried out at the appropriate level for all security grades, as given in EN 50130-5.

The warning device shall meet the requirements of the relevant environmental class as specified by

the manufacturer.

For operational tests, the warning device shall not generate unintentional activations, tamper, fault or

other signals or messages, when subjected to the specified range of environmental conditions.

For endurance tests, the warning device shall continue to meet the requirements of this European

Standard after being subjected to the specified range of environmental conditions.

See 6.10 for the relevant tests and severity.
5.4 EMC Susceptibility

For all grades the warning device shall meet the performance requirements of this European Standard

...

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