The Extech 38389-NIST 600A True RMS AC/DC Autoranging Clamp Meter with Capacitance and Temperature functions measures AC and DC current up to 600A with 0.1A resolution. The 1.25 in. (33mm) jaw accommodates conductors up to 350MCM. The meter's Peak Hold function can be activated to capture and store the highest reading. Multimeter functions include AC/DC voltage to 600V, resistance to 40M and capacitance to 100mF. This meter also measures temperature from -4 to 1400F (-20 to 760C). Cat ll 600V, CE and UL listed. With NIST Calibration.