UNE-EN IEC 60869-1:2018 Fibre optic interconnecting devices and passive components - Fibre optic passive power control devices - Part 1: Generic specification (Endorsed by Asociación Española de Normalización in March of 2019.)
2019UNE-EN IEC 60869-1:2018 Fibre optic interconnecting devices and passive components - Fibre optic passive power control devices - Part 1: Generic specification (Endorsed by Asociación Española de Normalización in March of 2019.)