This is a 6 X 8 switch board, so you can test a Bally or Stern MPU switch matrix without having to plug it into the cabinet or playfield. i.e. can test on the bench.

Each switch is a latching switch, so can simulate switches that should be closed most of the time, e.g. the ball trough switches on multi ball games, such as Centaur, Fathom, Fireball II etc.

I have put a LED under each switch so that the led indicates if the switch is closed or not.

This means the board needs power to drive the indicator LEDs, so it has a 5v power header at the top as well as a header for the rows and columns.  (Note, you do not need to power it if you dont want to use the indicator leds - the switches will still register on the MPU.).

I will ship with a Mains PSU that has international plugs on it - so should work in UK, USA, Europe, Australia etc. - See pics.