With a full range of AC/DC current, AC/DC voltage, and frequency measurement functions for basic electrical troubleshooting, this clamp meter comes with a large backlit display is an excellent amp clamp meter choice. Rated CAT III 600 V, the AMP 220 clamp meter offers True-RMS sensing, fast response processor, non-contact voltage detection, capacitance, resistance and continuity measurements to enhance efficiency and safety in todays complex electrical environments. The Amp-Tip function allows for precise measurement of current down to the tenth of an Amp, enabling accurate current measurement of both large and small diameter wires. A low pass filter allows measurement of current and voltage on variable frequency drives (motors with speed controlled by frequency).