For sale is a General Electric Type 44A27049-G01 Input / Output Board. Board is also labeled: SSRB1 / 44A712746-001 / 44B712865- 002/1. Opto-coupler relays operate on 24V DC control voltage, and 120V AC load voltage. NOTE: I removed these I/O boards from a LeBlond - Makino Baron 15 CNC Lathe that came out of a recently closed-down manufacturing plant. (2) Available.