OWON CP-07+ AC/DC Current Clamp Probe Connect To Oscilloscope AC/DC Measurement Relative Zero Correction Connect to Oscilloscope.AC/DC current Measurement.10mA to 40A test range.Bandwidth: DC~1MHz(±3db). Noise level: 5mAJaw size: 5mm max.Auto zero at power on.Relative zero correction.RangeAccuracySensitivityBandwidth 4A±1.5%0.01A/1mVDC~1MHz 0-20A±1.5%0.1A/1mVDC~1MHz 20-40A±3.0%0.1A/1mVDC~1MHz