NEN EN 50136-4 : DRAFT 1993
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ALARM TRANSMISSION SYSTEM - PART 4: ANNUNCIATION EQUIPMENT
20-01-2004
12-01-2013
Describes the general requirements for annunciation equipment used in alarm receiving centres.
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