Alarm systems. Intrusion and hold-up systems - Control and indicating equipment Ingestion-build-181247 BS EN 4312 is a

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Alarm systems. Intrusion and hold-up systems - Control and indicating equipment Ingestion-build-181247 BS EN 4312 is a1 Scope This standard specifies the requirements, performance criteria and testing procedures for control and indicating equipment (CIE) intended for use in intrusion and hold up alarm systems (I&HAS) installed in buildings. This document also applies to CIE to be used in IAS or HAS. The CIE may incorporate processing functions of other I&HAS components or its processing requirements may be distributed among such components. This standard specifies