Fostex 8390 Tape/Slide Synchronizer so either I have made

so either I have made a mistake or there are two versions ( I know there are 3 Variants in the B-16)

Used in the B16 and now I have seen the E16

if yours does not match the photo

Old style Hirose connnector used but can be re-used easily

Fostex 8390 Tape/Slide Synchronizer so either I have madeNot seen one of these for years , if I remember correctly this was used with tapes that had a pulse on to change the slides in projectors for big audio visual units and displays. I seem to remember using one of these when I was in my first job with the Kodak carousel slide projectors. comes with some leads though not sure they are the original