Home and Building Electronic Systems (HBES) - Part 9-1: Installation requirements - Generic cabling for HBES Class 1 Twisted Pair; German version EN 50090-9-1:2004
German title
Elektrische Systemtechnik für Heim und Gebäude (ESHG) - Teil 9-1: Installationsanforderungen - Verkabelung von Zweidrahtleitungen ESHG Klasse 1; Deutsche Fassung EN 50090-9-1:2004
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