本文件规定了施工、设计、性能、标记和用户要求 附在头部保护和/或面部保护装置上的耳罩信息，见下文 被称为“安装式耳罩”。 特别是，它规定了有关安装的耳罩的声音衰减的要求 根据EN ISO 4869-1:2018。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies requirements for construction, design, performance, marking and user information for earmuffs attached to head protection and/or face protection devices, hereinafter referred to as 'mounted earmuffs'. In particular, it specifies requirements regarding the sound attenuation of mounted earmuffs, measured in accordance with EN ISO 4869-1:2018.All current amendments available at time of purchase are included with the purchase of this document.