This part of the standard is concerned with two-way communication ear-muffs whose passive acoustic performance may be supplemented by an electrical two-way communication facility or circuit for essential safety-related purposes. It specifies additional constructional, design and performance requirements and user information relating to the incorporation of the two-way communication facility. The requirements of this standard are intended to take account of the ergonomic interaction between the wearer, the device and, where possible, the working environment in which the device is likely to be used (see Annex ZA of this standard and EN 458).
ABANDON
prEN 352-11
30.98
Project deleted
Oct 7, 2011