Case Control for Transponder (Sonar or Radar or Craft ID???)
Military Surplus made by Sentinel Electronics, Bristol, Pa.
Wires are cut flush leading out of the box
I have some printed info that I will enclose, including wiring info
This is very technical, but the parts used are the best military grade, The case itself is in good shape too. You need to be trained in this in order to make this work, or just use the parts, switches, etc.