Keithley Differential Multiplexer Plug-in Module, 770x Series - Keithley 7701, The 7701 plug-in module offers 32 channels of 2-pole or 16 channels of 4-pole multiplexer switching.
Its 32 channels can be configured for common-side 4-wire ohms.
They can also be configured as two independent banks of multiplexers.
It is ideal for RTD or thermistor temperature applications.
Keithley 7701 32 Channel Differential Multiplexer