The 2-1318118-9 is a double-row receptacle housing connector from the Dynamic Series D-2100D family, designed for 20-position configurations with a 2.5 mm pin pitch. This black receptacle housing features gold plating and is part of a modular connector system that supports multiple mounting options including panel-type tab housing, free-hanging tab housing, and board-mounting headers in both horizontal and vertical orientations. The connector has external dimensions of 25.8 mm (A) × 20.0 mm (B) × 14.8 mm (C) and is keyed with a Y-key configuration for proper mating alignment. This connector is widely used in industrial control systems, automation equipment, and modular panel assemblies where reliable multi-position signal and power distribution is required.