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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

NF S78-501-9 ; NF EN 352-9+A1:2024-04-03
Hearing protectors - Safety requirements - Part 9: Earplugs with safety-related audio input

Title (German)

Gehörschützer - Sicherheitstechnische Anforderungen und Prüfungen - Teil 9: Gehörschutzstöpsel mit elektrischem Audioeingang

Edition 2024-04-03

Original language French

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

NF S78-501-9 ; NF EN 352-9+A1:2024-04-03 Hearing protectors - Safety requirements - Part 9: Earplugs with safety-related audio input

Want to learn more?

NF S78-501-9 ; NF EN 352-9+A1:2024-04-03
Hearing protectors - Safety requirements - Part 9: Earplugs with safety-related audio input