The Keithley 7011S Quad 1x10 Multiplexer Card has four independent banks of 1 10, 2-pole channel switching that can be combined for a wide variety of configurations: dual 1 20, a 1 10 plus 1 30, or one large 1 40-channel multiplexer. The Keithley 7011S will automatically configure the Model 7001 or 7002 mainframe. Each multiplexer output connects to the 7001/7002 analog backplane through removable jumpers for even greater flexibility.