Alarm systems - Alarm transmission systems and equipment - Part 2-1: General requirements for alarm transmission equipment; German version EN 50136-2-1:1998 + Corrigendum 1998 + A1:2001
German title
Alarmanlagen - Alarmübertragungsanlagen und -einrichtungen - Teil 2-1: Allgemeine Anforderungen an Alarmübertragungseinrichtungen; Deutsche Fassung EN 50136-2-1:1998 + Corrigendum 1998 + A1:2001
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