This part is a kind of semiconductor called 7100MD9AV2BE.
Function of this product has Rocker and Lever Handle Switches.
Manufacturers : ITT Industries
Image and pinout :

Some of the text within the PDF file :
C&K 7000 Series Rocker and Lever Handle Switches S S S S S S Multi-pole and multi-position Wide variety of actuator and termination options Epoxy sealed terminals prevent contamination during soldering Telecommunications Instrumentation Medical equipment Features/Benefits Models Available Typical Applications Build-A-Switch Our easy Build-A-Switch concept allows you to mix and match options to create the switch you need. Below is a complete listing of options shown in catalog. To order, simply select desired option from each category and place in the appropriate box. Switches with standard options are shown on pages F-4 and F-5. Available options are shown and described on pages F-6 thru F-22. For additional options not shown in catalog, consult Customer Service Cen [ ... ]
7100MD9AV2BE PDF Datasheet Download
