The i30s current clamp is based on Hall Effect technology for use in measurement of both DC and AC current. The current clamp may be used in conjunction with oscilloscopes and other suitable recording instruments for accurate non-intrusive current measurement. Current range: 30 mA to 30 A DC, 30 mA to 20 A AC rms Frequency range: DC to 100 kHz (-0.5 dB) CAT III 300 V safety rating