Opto 22 G4PB32DEC Module Rack; 50-Pin; Fuse; Rack Mount USED, W/7 Sets I/O Relay

193397 New-Incomplete; Opto 22 AC5 ISA Bus To Card Edge I/O Rack; w/o cable

209436 Old-Stock; Opto 22 G4 IDC5K I/O Module 2.5~16 VDC; 5V Logic

OPTO 22 Assorted boards and modules

MetraByte Corp DAS-16, STA-16 Terminal Accessory Board with OPTO 22 PB4 Relay

Opto 22 PB16T 16-Channel Power Module Rack - USED

OPTO 22 SNAP-B3000-ENET Ethernet I/O Module. New With Out Box

244064 New-No Box; Opto 22 AD6 I/O Module 0-5VDC Output