1. This miniature clamp meter features two Hall effect sensors 2. For use with any multimeter with 200mV or/and 2V ranges for direct readout input impedance of least 1M ohm. 3. High conversion factor for low DC and AC mA measurement. 4. With the small jaw size it can fit into tight space in circuit panel or wire bundle to take the reading 5. The high frequency response at 20 kHz is useful for waveform monitoring on an oscilloscope. 6. Zero adjustment is made easy by just pushing the ZERO button. 7. It is best for locating small signal, industrial control, battery leakage,and automotive usage