The Model 2001-TCSCAN is a scanner card designed to be installed in the Model 2000, 2001, 2002, or 2010 Multimeter. Key features include: Built-in reference junction (channel 1). Low contact potential and offset current. Input connectors are in contact with an isothermal block to minimize temperature differences. Nine channels of 2-pole relay input. Four channel pairs configurable for 4-pole operation. Multiplex one of nine 2-pole, or one of four 4-pole channels into the DMM.