Opto 22 PB8 8-channel I/o Relay Module Rack Card w/ 3 Modules - Used

10pcs DC 5V 1 Channel Relay Module Switch Board Optocoupler Is Color: 5V-10pcs

OPTO 22 PB16A 16-Channel Rack I/O Board + 5 Modules-Used Take Out

Gordos Arkansas IAC5Q OPTO 22 I/O Module-NIB

#242 OPTO 22 PB16A 16-Channel Rack I/O Board + IAC5 (x13) Input I/O Module

OPTO 22 SNAP-IAC5 I/O 4 CHANNEL AC INPUT 90-140VAC 5VDC LOGIC ***LOTOF2***

Opto 22 TERM 1 PAMUX Bus Terminator Board Card

Opto 22, PAMUX, TERM 1 Card Terminator Board