S27 Model' SDP-AFD summary sheet for Intrusion Hold up Alarm Systems Systems

Whether as a result of good business practice or external regulation, alarm companies will usually issue a ‘specification’ to customers as part of a quotation for new Intrusion & Hold up Alarm Systems (I&HAS). This specification is more formally known, under relevant British Standards rules, by one of two names – depending on the status of the system at the time of the document’s preparation.

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