DIN EN IEC 61753-111-09:2023-10
Fibre optic interconnecting devices and passive components - Performance standard - Part 111-09: Sealed closures - Category S - Subterranean (IEC 61753-111-09:2021); German version EN IEC 61753-111-09:2021 / Note: DIN EN 61753-111-9 (2010-10) remains v...