G4PB16T
1 USED OPTO 22 G4PB16T CONTROL BOARD W/ G4 OAC24/ 70G-ODC24 MODS **MAKE OFFER**
I have been using the HBN 0.5microns version and it really keeps things clean.
1 USED OPTO 22 G4PB16T FIELD CONTROL BOARD W/ 16 OPTO 22 G4-OAC24 **MAKE OFFER**
A nice touch for the 2N, 8N, 9N 1939-1950 is the live PTO, which came on later versions.