The COOL-I-O® impedance accessory allows you to measure the impedance of passive electronic components. Characterize inductors, transformers, capacitors, resistors and other components. Impedance Range: 0.01 Ohm to 0.5 MOhm Capacitance Range: 1 pF to 0.01 F Inductance Range: 62 nH to 100 H This accessory works only with COOL-I-O.