Flush-mounted connection unit, equipped with an OpDAT module LC-D SM APC coupling (green) with adapter, slotted ceramic guide sleeve, service life min. 1000 plug-in cycles, plug-in direction of the module inclined 45° downwards, strain relief of the Kevlar by screw on the module carrier, Velcro tape for bundling the fiber supply, with viewing window for enclosed label insert, label sheet 209 x 294 mm see accessories, integrated dust protection flaps (also available in color), cover parts pure white RAL 9010, matt structured surface, compatible with design center pieces of switch ranges