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08/30129607 DC : DRAFT JULY 2008

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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BS 8521 - SPECIFICATION FOR DUAL-TONE MULTI-FREQUENCY (DTMF) SIGNALLING PROTOCOL FOR SOCIAL ALARM SYSTEMS (21TC)

Published date

23-11-2012

Superseded date

30-04-2009

Superseded by

BS 8521:2009

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Committee
GW/1/12
DocumentType
Draft
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

BS EN 50134-7:2017 Alarm systems. Social alarm systems Application guidelines
BS EN 50134-3:2012 Alarm systems. Social alarm systems Local unit and controller
BS EN 50134-5:2004 Alarm systems. Social alarm systems Interconnections and communications
BS EN 50134-2:2000 Alarm systems. Social alarm systems Trigger devices
BS EN 50134-1:2002 Alarm systems. Social alarm systems System requirements

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