2021DIN EN 352-5:2021 Hearing protectors - Safety requirements - Part 5: Active noise reduction earmuffs; German version EN 352-5:2020
1970DIN EN 352-5 E:2017-07 Hearing protectors - Safety requirements - Part 5: Active noise reduction earmuffs
2006DIN EN 352-5:2006 Hearing protectors - Safety requirements and testing - Part 5: Active noise reduction ear-muffs(includes Amendment A1:2005); English version of DIN EN 352-5:2006-03