Product Details National Instruments 4-Port Rs485/Rs422 Serial Interface Pci-8433/4 191871C-02L Specifications
Beckhoff KL6021 Serial Interface RS422/RS485 $993.97 https://www.ebay.com/itm/155387897352?hash=item242dd72608:g:…
National Instruments Pci-232/485.4Ch 4-Channel Serial Interface Pcb Card $719.65 Used: An item that has been used previously. The item may ha…