SIST EN 50131-1:2007

SLOVENSKI STANDARD
01-december-2007
1DGRPHãþD
SIST EN 50131-1:1999
Alarmni sistemi - Sistemi za javljanje vloma in ropa - 1. del: Sistemske zahteve
Alarm systems - Intrusion and hold-up systems -- Part 1: System requirements
Alarmanlagen - Einbruch- und Überfallmeldeanlagen -- Teil 1: Systemanforderungen
Systèmes d'alarme - Systèmes d'alarme contre l’intrusion et les hold-up -- Partie 1:
Exigences système
Ta slovenski standard je istoveten z: EN 50131-1:2006
ICS:
13.310 Varstvo pred kriminalom Protection against crime
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50131-1
NORME EUROPÉENNE
October 2006
EUROPÄISCHE NORM
ICS 13.310 Supersedes EN 50131-1:1997

English version
Alarm systems -
Intrusion and hold-up systems
Part 1: System requirements
Systèmes d'alarme -  Alarmanlagen -
Systèmes d'alarme contre l’intrusion Einbruch- und Überfallenmeldeanlagen
et les hold-up Teil 1: Systemanforderungen
Partie 1: Exigences système
This European Standard was approved by CENELEC on 2006-04-04. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50131-1:2006 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 79, Alarm systems.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50131-1 on
2006-04-04.
This European Standard supersede EN 50131-1:1997.
The following dates were fixed

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-05-01
This standard is part of the EN 50131 series of European Standards and Technical Specifications “Alarm
systems - Intrusion and hold-up systems”, written to include the following parts:
Part 1 System requirements
Part 2-2 Requirements for passive infrared detectors
Part 2-3 Requirements for microwave detectors
Part 2-4 Requirements for combined passive infrared and microwave detectors
Part 2-5 Requirements for combined passive infrared and ultrasonic detectors
Part 2-6 Requirements for opening contacts (magnetic)
1)
Part 2-7 Intrusion detectors - Glass break detectors
Part 3 Control and indicating equipment
Part 4 Warning devices
Part 5-3 Requirements for interconnections equipment using radio frequency techniques
Part 6 Power supplies
Part 7 Application guidelines
1)
Part 8 Security fog devices
__________
1)
At draft stage.
– 3 – EN 50131-1:2006
Contents
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Definitions and abbreviations. 7
3.1 Definitions. 7
3.2 Abbreviations . 13
4 System functions. 14
5 System components . 14
6 Security grading . 14
7 Environmental classification .15
7.1 Environmental Class I – Indoor. 15
7.2 Environmental Class II – Indoor – General. 15
7.3 Environmental Class III – Outdoor – Sheltered. 15
7.4 Environmental Class IV – Outdoor – General. 15
8 Functional requirements . 15
8.1 Detection of intruders, triggering, tampering and the recognition of faults. 15
8.2 Other functions . 17
8.3 Operation.17
8.4 Processing. 22
8.5 Indications .24
8.6 Notification. 25
8.7 Tamper security . 27
8.8 Interconnections. 29
8.9 I&HAS timing performance . 31
8.10 Event recording. 31
9 Power supply. 34
9.1 Types of power supply. 34
9.2 Requirements. 34
10 Operational reliability. 35
10.1 I&HAS components . 35
11 Functional reliability. 35
12 Environmental requirements . 35
12.1 Electromagnetic compatibility . 35
13 Electrical safety. 36
14 Documentation . 36
14.1 Intruder and hold-up alarm system documentation . 36
14.2 Intruder and hold-up alarm system component documentation . 36
15 Marking/Identification . 36
Annex A (normative) Special national conditions . 37
Annex B (informative) Alarm transmission system performance criteria . 38
Table 1 – Faults. 16
Table 2 – Levels of access . 18
Table 3 – Authorisation code requirements . 18
Table 4 – Prevention of setting. 19

Table 5 – Overriding of prevention of setting conditions. 20
Table 6 – Restoring . 21
Table 7 – Processing of intruder, hold-up, tamper alarm and fault signals/messages . 23
Table 8 – Indication . 24
Table 9 – Indications available during set and unset status at access level 1 . 25
Table 10 – Notification Requirements. 26
Table 11 – Alarm transmission system performance criteria . 27
Table 12 – Tamper detection – Components to include . 28
Table 13 – Tamper detection – Means to be detected . 28
Table 14 – Monitoring of substitution. 28
Table 15 – Monitoring of substitution – Timing . 29
Table 16 – Maximum unavailability of interconnections. 30
Table 17 – Verification intervals . 30
Table 18 – Maximum time period from last signal or message . 30
Table 19 – Security of signals and messages. 31
Table 20 – Signals or messages to be generated . 31
Table 21 – Event recording – Memory. 32
Table 22 – Event recording – Events to be recorded. 33
Table 23 – Minimum duration of alternative power supply. 34
Table 24 – Alternative power supply– Recharge periods. 35
Table B.1 – Transmission time classification . 38
Table B.2 – Transmission time – Maximum values . 38
Table B.3 – Reporting time classification. 38

– 5 – EN 50131-1:2006
Introduction
This European Standard applies to Intrusion and Hold-up Alarm Systems. The standard is also intended to
apply to Intruder Alarm Systems which include only intrusion detectors and to Hold-up Alarm Systems which
include only hold-up devices.
This European Standard is a specification for Intrusion and Hold-up Alarm Systems (I&HAS) installed in
buildings, it includes four security grades and four environmental classes.
The purpose of an I&HAS is to enhance the security of the supervised premises. To maximise its
effectiveness an I&HAS should be integrated with appropriate physical security devices and procedures. This
is particularly important to higher grade I&HAS.
This standard is intended to assist insurers, intruder alarm companies, customers and the police in achieving
a complete and accurate specification of the supervision required in particular premises, but it does not
specify the type of technology, the extent or degree of detection, nor does it necessarily cover all of the
requirements for a particular installation.
All references to the requirements for I&HAS refer to basic minimum requirements and the designers of such
installed I&HAS should take into account the nature of the premises, the value of the contents, the degree of
risk of intrusion, the threat to personnel and any other factors which may influence the choice of grade and
content of an I&HAS.
Recommendations for design, planning, operation, installation and maintenance are given in Application
Guidelines CLC/TS 50131-7.
This standard is not intended to be used for testing individual I&HAS components. Requirements for testing
individual I&HAS components are given in the relevant component standards.
I&HAS and components thereof are graded to provide the level of security required. The security grades take
into account the risk level which depends on the type of premises, the value of the contents, and the typical
intruder or robber expected.
1 Scope
This European Standard specifies the requirements for Intrusion and Hold-up Alarm Systems installed in
buildings using specific or non-specific wired interconnections or wire-free interconnections. These
requirements also apply to the components of an I&HAS installed in a building which are normally mounted
on the external structure of a building e.g. ancillary control equipment or warning devices. The standard does
not include requirements for exterior I&HAS.
This standard specifies performance requirements for installed I&HAS but does not include requirements for
design, planning, installation, operation or maintenance.
These requirements also apply to I&HAS sharing means of detection, triggering, interconnection, control,
communication and power supplies with other applications. The operation of an I&HAS shall not be adversely
influenced by other applications.
Requirements are specified for I&HAS components where the relevant environment is classified. This
classification describes the environment in which an I&HAS component may be expected to operate as
designed. When the requirements of the four environmental classes are inadequate, due to the extreme
conditions experienced in certain geographic locations, special national conditions are given in Annex A.
General environmental requirements for I&HAS components are described in Clause 7.
The requirements of this European Standard also apply to IAS and HAS when these systems are installed
independently.
When an I&HAS does not include functions relating to the detection of intruders, the requirements relating to
intrusion detection do not apply.
When an I&HAS does not include functions relating to hold-up, the requirements relating to hold-up do not
apply.
NOTE Unless otherwise stated the abbreviation I&HAS is intended to also mean IAS and HAS.
2 Normative references
The following referenced documents are indispensable for the application 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.
CLC/TS 50131-7 2003 Alarm systems – Intrusion systems – Part 7: Application guidelines
EN 50130-4 1995 Alarm systems – Part 4: Electromagnetic compatibility – Product family
standard: Immunity requirements for components of fire, intruder and social
alarm systems
EN 50130-5 1998 Alarm systems – Part 5: Environmental test methods
EN 50131-6 1997 Alarm systems – Intrusion systems – Part 6: Power supplies
EN 50136 series Alarm systems – Alarm transmission systems and equipment
EN 60065 2002 Audio, video and similar electronic apparatus – Safety requirements
(IEC 60065:2001, mod.)
EN 60073 2002 Basic and safety principles for man-machine interface, marking and
identification – Coding principles for indicators and actuators (IEC 60073:2002)

– 7 – EN 50131-1:2006
EN 60950-1 2006 Information technology equipment – Safety – Part 1: General requirements
(IEC 60950-1:2005, mod.)
EN 61000-6-3 2001 Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission
standard for residential, commercial and light-industrial environments
(CISPR/IEC 61000-6-3:1996, mod.)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this document, the following terms and definitions apply:
3.1.1
action
(relating to setting and unsetting) deliberate operation or act by the user which is part of the setting or
unsetting procedure
3.1.2
access level
level of access to particular functions of an I&HAS
3.1.3
active
state of a detector in the presence of a hazard
3.1.4
active period
period during which an alarm signal is present
3.1.5
alarm
warning of the presence of a hazard to life, property or the environment
3.1.6
alarm receiving centre
continuously manned centre to which information concerning the status of one or more I&HAS is reported
3.1.7
alarm company
organisation which provides services for I&HAS
3.1.8
alarm condition
condition of an I&HAS, or part thereof, which results from the response of the system to the presence of a
hazard
3.1.9
alarm notification
passing of an alarm condition to warning devices and/or alarm transmission systems
3.1.10
alarm system
an electrical installation which responds to the manual or automatic detection of the presence of a hazard

3.1.11
alarm transmission systems
equipment and network used to transfer information concerned with the state of one or more I&HAS to one or
more alarm receiving centres
NOTE Alarm transmission systems exclude local direct connections, i.e. interconnections between parts of an I&HAS which do not
require an interface to transform the I&HAS information into a form suitable for transmission.
3.1.12
alert indication
an audible and/or visual indication, available at access level 1, when an I&HAS is in the unset state, indicating
that further indication(s) are available to users at access levels 2, 3, or 4
3.1.13
alternative power source
power source capable of powering the system for a predetermined time when a prime power source is
unavailable
3.1.14
ancillary control equipment
equipment used for supplementary control purposes
3.1.15
application
electronic security system, EXAMPLE: social alarm, CCTV, access control or fire system or a non-security
electronic/electrical system EXAMPLE: heating, air conditioning, lighting
3.1.16 authorisation
permission to gain access to the various functions of an I&HAS
3.1.17
authorisation codes
physical or logical keys which permit access to I&HAS functions
3.1.18
availability of interconnection
condition when an interconnection is capable of conveying a signal or message
3.1.19
component substitution
the replacement of I&HAS components with alternative devices which prevent an I&HAS operating as
designed
3.1.20
communication
transmission of messages and/or signals between I&HAS components
NOTE The transmission of a signal may include the continual passing of an electrical current through a switch or relay forming the
interface between I&HAS components. It is not necessary to change the status of any such switch or relay. Due to the nature of data
communication the transmission of a message may require deliberate initiation, e.g. in response to a poll or at specified time intervals,
this initiation may or may not require the change of status of a switch or relay.
3.1.21
continually
recurring frequently at regular intervals
3.1.22
control and indicating equipment
equipment for receiving, processing, controlling, indicating and initiating the onward transmission of
information
– 9 – EN 50131-1:2006
3.1.23
entry/exit route
route by which authorised entry or exit to the supervised premises or part thereof may be achieved
3.1.24
event
condition arising from the operation of an I&HAS e.g. set/unset
3.1.25
event recording
storage of events arising from the operation of an I&HAS e.g. for analysis
3.1.26
fault condition
condition of an alarm system which prevents an I&HAS or parts thereof from functioning normally
3.1.27
fault signal/message
information generated due to the presence of a fault
3.1.28
hold-up alarm system
alarm system providing the means for a user to deliberately generate a hold-up alarm condition
3.1.29
hold-up device
device which when triggered causes a hold-up alarm signal or message to be generated
3.1.30
hold-up alarm condition
condition of an alarm system, or part thereof, which results from the response of an I&HAS to the triggering of
a hold-up device
3.1.31
indication
information (in audible, visual or any other form) provided to assist the user in the operation of an I&HAS
3.1.32
inhibit
status of a part of an I&HAS in which an alarm condition cannot be notified, such status remaining until the
I&HAS or part thereof is unset
3.1.33
interconnection
means by which messages and/or signals are transmitted between I&HAS components
3.1.34
interconnection media
medium by which signals or messages are conveyed
3.1.35
interference
corruption of signals and/or messages passing between I&HAS components

3.1.36
intruder alarm system
alarm system to detect and indicate the presence, entry or attempted entry of an intruder into supervised
premises
3.1.37
intruder alarm condition
condition of an I&HAS, or part thereof, which results from the response of the I&HAS to the presence of an
intruder
3.1.38
intruder signal or message
information generated by an intruder detector
3.1.39
intrusion detector
device designed to generate an intruder signal or message in response to the sensing of an abnormal
condition indicating the presence of a hazard
3.1.40
intrusion and hold-up alarm system
combined intruder and hold-up alarm system
3.1.41
isolation
status of a part of an alarm system in which an alarm condition cannot be notified, such status remaining until
manually cancelled
3.1.42
masked
condition whereby the field of view of a movement detector is blocked
3.1.43
message
series of signals routed via interconnections which include identification, function data and the various means
for providing its own integrity, immunity and proper reception
3.1.44
message substitution
intentional or unintentional creation of alternative message between I&HAS components which prevent the
correct operation of an I&HAS
3.1.45
monitoring
process of verifying that interconnections and equipment are functioning correctly
3.1.46
non-specific wired interconnection
interconnection conveying information pertaining to two or more applications
3.1.47
normal condition
state of an I&HAS where no conditions exist which would prevent the setting of an I&HAS
3.1.48
notification
passing of an alarm, tamper or fault condition to warning devices and/or alarm transmission systems

– 11 – EN 50131-1:2006
3.1.49
operator
authorised individual (a user) using an I&HAS for its intended purpose
3.1.50
override
intervention, by a user, to permit setting when a fault condition exists
3.1.51
part set
status of a zone of an I&HAS in which an intruder or hold-up alarm condition can be notified but part of the
I&HAS is unset
3.1.52
pending indication
means of indicating that further information is available for display when all information cannot be displayed
simultaneously
3.1.53
periodic communication
any valid signal or message
3.1.54
power supply
part of an alarm system which provides power for an I&HAS
3.1.55
prime power source
power source used to support an I&HAS under normal operating conditions
3.1.56
restore
procedure of cancelling an alarm, tamper, fault or other condition and returning an I&HAS to a previous
condition
3.1.57
self powered device
device incorporating its own power sources
3.1.58
sensor
part of a detector which senses a change in condition
3.1.59
set
status of an I&HAS or part thereof in which an intruder or hold-up alarm condition can be notified
3.1.60
signal
variable parameters by which information is conveyed
3.1.61
significant reduction of range
reduction of the detection range of a movement detector, measured on the central axis of the detector,
exceeding 50 % of specified range, as specified in the System Design Proposal (see CLC/TS 50131-7, F.5)

3.1.62
site specific data
information relating to the configuration of an I&HAS e.g. processing parameters
3.1.63
specific wired interconnection
interconnection conveying information pertaining to one application
3.1.64
standby period
period during which the alternative power source is capable of supporting an I&HAS
3.1.65
subsystem
part of an I&HAS located in a clearly defined part of the supervised premises capable of independent
operation
3.1.66
supervised premises
part of a building and/or area in which an intrusion, attempted intrusion, or the triggering of a hold-up device
may be detected by an I&HAS
3.1.67
supplementary prime power source
energy source (independent of the prime power source) capable of supporting an I&HAS for extended
periods, without affecting the standby period of the alternate power source
3.1.68
system attributes
characteristics of an I&HAS arising out of its design and configuration
3.1.69
system components
individual items of equipment which make an I&HAS when configured together
3.1.70
tamper
deliberate interference with an I&HAS or part thereof
3.1.71
tamper alarm
alarm generated by tamper detection
3.1.72
tamper condition
condition of an I&HAS in which tampering has been detected
3.1.73
tamper detection
detection of deliberate interference with an I&HAS or part thereof
3.1.74
tamper protection
methods or means used to protect an I&HAS or part thereof against deliberate interference

– 13 – EN 50131-1:2006
3.1.75
tamper security
methods or means used to protect an I&HAS or part thereof against deliberate interference and the detection
of deliberate interference with an I&HAS or part thereof
3.1.76
tamper signal or message
information generated by a tamper detector
3.1.77
transmission path
a transmission path between an individual alarm system and its associated alarm receiving centre(s)
3.1.78
triggering
deliberate operation of a hold-up device
3.1.79
unset
status of an I&HAS or part thereof in which an intruder or hold-up alarm condition cannot be notified
3.1.80
user
person authorised to operate an I&HAS
3.1.81
user interface
means by which a user operates an I&HAS
3.1.82
warning device
a device that gives an audible alarm in response to a notification
NOTE A warning device may also provide alert indications providing such indications are easily distinguishable from an alarm.
3.1.83
wire-free interconnection
interconnection conveying information between I&HAS components without physical media
3.1.84
zone
assessed area where abnormal conditions may be detected
3.2 Abbreviations
For the purposes of this document, the following abbreviations are used:
ARC - alarm receiving centre
ACE - ancillary control equipment
ATS - alarm transmission system
CIE - control and indicating equipment
HAS - hold-up alarm system(s)
IAS - intruder alarm system(s)
I&HAS - intrusion and hold-up alarm system(s)

WD - warning device
PS - power supply
4 System functions
I&HAS shall include, as appropriate to the configuration of the I&HAS, the functions specified in this standard
for the detection of intruders and/or triggering, processing of information, notification of alarms and the
means to operate an I&HAS.
Functions additional to the mandatory functions specified in this standard may be included in I&HAS providing
they do not influence the correct operation of the mandatory functions.
5 System components
I&HAS components shall be classified according to their environmental capability and graded according to
their performance.
I&HAS components shall be compatible within an I&HAS and selected according to the system grade and
appropriate environmental classification.
Components of other applications may be combined or integrated with an I&HAS, providing the performance
of the I&HAS components is not adversely influenced.
6 Security grading
I&HAS shall be given a security grading which will determine its performance. The grading shall be one of
four grades with grade 1 being the lowest grade and grade 4 the highest. The grade of an I&HAS shall be that
of the lowest graded component.
When an I&HAS is divided into clearly defined sub-systems an I&HAS may include components of differing
grades within each sub-system. The grade of a subsystem shall be that of the lowest graded component
within it.
Components shared by more than one sub-system shall have a grade equal to that of the highest sub-system
grade (e.g. control and indicating equipment/alarm transmission systems/warning devices/power supplies).
NOTE 1 For the guidance of specifiers and those responsible for the security of premises the following grades are given:
Grade 1: Low risk
An intruder or robber is expected to have little knowledge of I&HAS and be restricted to a limited range of easily available
tools.
Grade 2: Low to medium risk
An intruder or robber is expected to have a limited knowledge of I&HAS and the use of a general range of tools and portable
instruments (e.g. a multi-meter).
Grade 3: Medium to high risk
An intruder or robber is expected to be conversant with I&HAS and have a comprehensive range of tools and portable
electronic equipment.
Grade 4: High risk
To be used when security takes precedence over all other factors. An intruder or robber is expected to have the ability or
resource to plan an intrusion or robbery in detail and have a full range of equipment including means of substitution of
components in an I&HAS.
NOTE 2 In the all grades the term “Intruder” is intended to embrace other types of threat (e.g. robbery or the threat of physical
violence, which might influence the design of an I&HAS).

– 15 – EN 50131-1:2006
7 Environmental classification
Components shall be suitable for use in one of the following environmental classes. Environmental test
requirements for I&HAS components are given in the individual component standards. EN 50130-5 describes
environmental test methods to be applied to I&HAS components.
NOTE 1 Classes I, II, III and IV are progressively more severe and therefore Class IV components may, for example, be used in
Class III I&HAS.
I&HAS components shall operate correctly when exposed to environmental influences specified in 7.1, 7.2,
7.3 and 7.4. For each class, typical information is given below.
NOTE 2 Annex A includes special national conditions for specified countries.
NOTE 3 The environmental conditions described in Clause 7 are those in which an I&HAS is expected to perform correctly, they are
not necessarily the conditions to be used during the testing of I&HAS components.
7.1 Environmental Class I – Indoor
Environmental influences normally experienced indoors when the temperature is well maintained (e.g. in a
residential or commercial property).
NOTE Temperatures may be expected to vary between +5 °C and +40 °C with average relative humidity of approximately 75 % non-
condensing.
7.2 Environmental Class II – Indoor – General
Environmental influences normally experienced indoors when the temperature is not well maintained (e.g. in
corridors, halls or staircases and where condensation can occur on windows and in unheated storage areas
or warehouses where heating is intermittent).
NOTE Temperatures may be expected to vary between -10 °C and +40 °C with average relative humidity of approximately 75 %
non-condensing.
7.3 Environmental Class III – Outdoor – Sheltered or indoor extreme conditions
Environmental influences normally experienced out of doors when I&HAS components are not fully exposed
to the weather or indoors where environmental conditions are extreme.
NOTE Temperatures may be expected to vary between -25 °C and +50 °C with average relative humidity of approximately 75 %
non-condensing. For 30 d per year relative humidity can be expected to vary between 85 % and 95 % non-condensing.
7.4 Environmental Class IV – Outdoor – General
Environmental influences normally experienced out of doors when I&HAS components are fully exposed to
the weather.
NOTE Temperatures may be expected to vary between -25 °C and +60 °C with average relative humidity of approximately 75 %
non-condensing. For 30 d per year relative humidity can be expected to vary between 85 % and 95 % non-condensing.
8 Functional requirements
8.1 Detection of intruders, triggering, tampering and the recognition of faults
I&HAS shall include, as appropriate to its configuration, means for the detection of intruders, triggering,
tampering and the recognition of faults necessary to meet the requirements of this standard.
NOTE When an I&HAS is configured as an IAS, i.e. only including intrusion detectors, it is not necessary for the system to provide
the functionality required of a HAS. Similarly when an I&HAS is configured as an HAS it is not necessary for the system to provide
functionality required of an IAS.
Other events may be detected providing this does not adversely influence the mandatory requirements for the
detection of intruders, triggering, tampering and the recognition of faults.

8.1.1 Intruder detection
Detectors shall be suitable for the environment and application and may incorporate more than one
technology.
Detectors shall be designed and installed so as to maximise the detection of genuine intrusion and minimise
the risk of false alarms
An intruder signal or message shall be generated for the required duration when an intrusion detector has
been activated. This duration shall be as necessary to ensure communication is achieved.
8.1.2 Hold-up device – triggering
I&HAS shall, as appropriate, include hold-up devices which are suitable for the environment and application.
Hold-up devices shall include means to minimise the possibility of accidental triggering.
A hold-up signal or message shall be generated when a hold-up device has been in an active condition for
the required duration. This duration shall be as necessary to ensure communication is achieved.
8.1.3 Tamper detection
Tamper detection shall be incorporated in all I&HAS components as specified in Table 12.
A tamper signal or message shall be generated for the required duration when a tamper detector has been
activated. This duration shall be as necessary to ensure communication is achieved.
8.1.4 Recognition of faults
Dependent upon the grade of an I&HAS means shall be provided to recognise the fault conditions specified in
Table 1.
A fault signal or message shall be generated for the required duration when a fault has been present for the
required period. This duration shall be as necessary to ensure communication is achieved.
Table 1 – Faults
Faults Grade 1 Grade 2 Grade 3 Grade 4
Detector(s) M M M M
Hold-up device(s) M M M M
Prime power source M M M M
Alternative power source M M M M
Interconnections M M M M
a
Alarm transmission system(s) M M M M
Warning device(s) M M M M
Other faults Op Op Op Op
Key: M = Mandatory Op = Optional.
NOTE The requirement for I&HAS to recognise detector, hold-up device, ATS and WD faults does not imply such equipment is
required to provide a dedicated faults output, for example a WD fault may be derived from a failure of periodic communication.
a
Where an I&HAS is required by its grade and notification option to have more than one alarm transmission system a fault on any
ATS shall be recognised.
– 17 – EN 50131-1:2006
8.2 Other functions
8.2.1 Masking
In grade 3 and 4 I&HAS movement detectors shall include means to detect masking.
8.2.2 Movement detector range reduction
In grade 4 I&HAS movement detectors shall include the means to detect significant reduction of specified
range.
8.3 Operation
I&HAS shall be designed to minimise the possibility of an operator generating a false alarm.
Controls, e.g. keypad buttons, used during the operation of an I&HAS shall be clearly and unambiguously
marked and logically arranged in such a manner as to minimise the possibility of incorrect operation.
8.3.1 Access levels
This standard specifies four levels of user access that categorise the ability of users to access the system
components and controls
The four access levels are as follows.
Level 1 Access by any person
Functions required to be accessible at level 1 shall have no restriction on access.
Level 2 User access e.g. by an operator
Functions affecting the operational status (without changing an I&HAS configuration, e.g. site
specific data).
Access to functions required to be accessible at level 2 shall be restricted by means of a key or
code operated switch or lock or other equivalent means. Level 2 key or codes shall not provide
access at level 3 or level 4.
Level 3 User access e.g. by alarm company personnel
All functions affecting an I&HAS configuration (without changing equipment design).
Access to functions required to be accessible at level 3 shall be restricted by means of a key or
code operated switch or lock or other equivalent means. Level 3 key or codes shall not provide
access at level 4.
Level 4 User access e.g. by the manufacturer of the equipment
Access to components to change equipment design.
Access to functions required to be accessible at level 4 shall be restricted by means of a key or
code operated switch or lock or other equivalent means.
NOTE Access level 4 applies when changing the operating programme software without having activated a tamper
device on the CIE or ACE.
Access at levels 3 and 4 shall be prevented until access has been permitted by a user with level 2 access.
Access at level 4 shall also require authorisation by a level 3 user.
Access at levels 2, 3 & 4 may be achieved remotely providing authorisation, equivalent to that specified in
Table 3, is achieved.
The functions accessible at each level are described in Table 2.

Table 2 – Levels of access
Functions Access levels
a b
1 2 3 4
Setting NP P P NP
Unsetting NP P P NP
Restore I&HAS NP P P NP
Verify I&HAS functions NP P P NP
Interrogate event log NP P P NP
c
Inhibit/isolate/override NP P P NP
d d d
Add/change individual authorisation codes NP P P P
Add/delete level 2 users & codes NP NP P NP
Add/change site specific data NP NP P NP
Change/replace basic programme NP NP NP P
Key: P = Permitted NP = Not permitted.
NOTE 1 The inclusion of the functions shown in this table does not imply that provision of such functions in I&HAS is mandatory.
NOTE 2 This table specifies access levels for each function; further conditions, applicable to each function, are specified elsewhere in
this standard.
NOTE 3 Requirements relating to user access are not intended to restrict methods of initialisation of user access at the time that the
CIE is first powered-up (e.g. the existence of default or single use access codes)
a
Only when authorised at level 2.
b
Only when authorised at level 2 and level 3.
c
Depending on the grade.
d
An individual is only permitted to change his/her own user code.

8.3.2 Authorisation
Permission to gain access to functions of an I&HAS shall be restricted by the use of authorisation codes or
equivalent means as specified in Table 3.
Table 3 – Authorisation code requirements
Access levels Grade 1 Grade 2 Grade 3 Grade 4
2, 3, & 4 differs differs differs differs
Logical key 1 000 10 000 100 000 1 000 000
Physical key  300 3 000 15 000  50 000
NOTE Reference to physical and logical keys in the above table does not exclude the use of other means of authorisation, e.g.
biometrics.
8.3.3 Setting and Unsetting
There shall be facilities to restrict access to the means of setting and unsetting to user(s) with the appropriate
level of access.
Means shall be provided to enable a user with the appropriate level of access, to set and unset an I&HAS
whilst minimising the possibility of incorrect operation.
It is permitted to provide means to set and unset an IAS and an HAS and/or to set and unset parts of an IAS,
HAS or I&HAS independently.
– 19 – EN 50131-1:2006
8.3.4 Setting
Setting of an I&HAS or part thereof shall be achieved by an authorised action provided all functions of the
system, or part thereof, are in a normal condition. During the setting procedure a setting indication may be
provided.
Access levels 2 or 3 users are permitted to set all grades of I&HAS using authorisation codes or equivalent
means as specified in Table 3, grade 1.
8.3.5 Prevention of setting
Setting of an I&HAS or part thereof shall be prevented, unless overridden as permitted in 8.3.6, when one or
more of the conditions shown in Table 4 is present.
Table 4 – Prevention of setting
Prevention of setting conditions Grade 1 Gr
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