BS EN 352-6:2020 pdf free.Hearing protectors一Safety requirements Earmuffs with safety-related audio input. BS EN 352-6 1 Scope This document is applicable to earmuffs supplemented by a safety-related audio input. The audio signal can be transmitted by electrical input or other communication like Bluetooth 1. It specifies requirements on construction, design, performance, marking and user information related to the inclusion of...
BS EN 352-9:2020 pdf free
BS EN 352-9:2020 pdf free.Hearing protectors一Safety requirements,Earplugs with safety-related audio input. BS EN 352-9 This document is applicable to earplugs supplemented by a safety-related audio input. The audio signal can be transmitted by electrical input or other communication like Bluetooth1. It specifies requirements on construction, design, performance, marking and user information related to the inclusion of the safety-related audio input.Earplugs...