IEC 61753-042-2:2014 contains the minimum initial performance, test and measurement requirements and severities which plug-pigtail style and plug-receptacle style OTDR reflecting devices need to satisfy in order to be categorized as meeting the requirements of category C-Controlled environments, as defined in Annex A of IEC 61753-1:2007. They are for out-of-band OTDR testing of an optical fibre system. Annex B of this standard provides information concerning this device. Keywords: plug-pigtail style and plug-receptacle style OTDR reflecting devices, category C-Controlled environments