Click to expand Tap to zoom A&D AD-4406-03 RS-422/485/Relays (replaces standard RS-232C) by AND Weighing Save $-221.09 $221.09 | / SKU AD-4406-03 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart RS-422/485/Relays (replaces standard RS-232C)