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 the safety-related audio input. Earmuffs with safety-related audio input are designed to provide speech information and warning signals, while providing attenuation of external sound. They may be selected for use in a number of different environments, for example in air traffic communication, in the police forces, in the broadcasting and entertainment industries. The marking specified in EN 352-1:2020 [or EN 352-3:2020, as appropriate) shall be used. No additional marking is needed. The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 352-1:2020, Hearing protectors – General requirements – Part 1: Earmuffs EN 352-3:2020, Hearing protectors – General requirements – Part 3: Earmuffs attached to head protection and/or face protection devices EN 13819-3:2019, Hearing protectors – Testing – Part 3: Supplementary acoustic test methods.The information specified in EN 352-1:2020 (or EN 352-3:2020, as appropriate) and the following additional information shall be supplied with the earmuffs:  a] a reference to this standard EN 352-6:2020;b] an indication that the hearing protector provides safety-related audio input; c) the criterion input signal; d) the relationship between sound output level and input signal in 5 dB steps from a sound output level of 70 dB(A) up to the maximum input signal; e) the sound output level for maximum input signal; f) the usage time for the maximum input signal that corresponds to an equivalent sound output level of 82 dB(A) over 8 h; g) a method for checking, charging and changing batteries, if applicable; BS EN 352-6 pdf download.