DS EN 4165-004:2007 Aerospace Series - Connectors, Electrical, Rectangular, Modular - Operating Temperature 175 Degrees C Continuous - Part 004: Stackable Mounting Receptacle 2 And 4 Modules, Series 2 - Product Standard Specifies the stackable mounting receptacle series 2, for 2 or 4 modules used in the family of rectangular electrical modular connectors, operating temperature 175 degrees C continuous.