I/O Controls Destination Sign System DD-0CU-1 (Plug-in Input Device)

These I/O Controls Destination Sign System DD-0CU-1 (Plug-in Input Device) are used but they are in very good condition. Although I am unable to test them, They were purchased from University and I was told that they were in good working condition. For this reason I am confident covering them under my FREE 30 day return/refund guarantee. If you have any questions about these or any items that I have for sale here on eBay please do not hesitate to contact me.