National Instruments NI PXI-2503 / Relay Multiplexer

National Instruments NI PXI-2503 PXI Electromechanical Multiplexer Switch Module

National Instruments NI PXI-2503 Relay Multiplexer Module Card

National Instruments NI PXI-2576 Multibank Multiplexer Switch Untested Parts

National Instruments 2503 PXI Relay Multiplexer Board Module for Test Systems

National Instruments PXI-2503 10 MHz, Bus Interface, Relay Multiplexer. Tested!

National Instruments NI PXI-2594 2.5GHz 4X1 50Ω Multiplexer Module Untested

(x2) National Instruments NI PXI-2593 PXI RF Multiplexer Modules *for parts*