The MA260 is a True RMS 200A AC Open Jaw Clamp Meter. The MA260 has a built in NCV detector and can measure up to 200A in its 0.6 in. open jaw. True RMS for accurate readings of noisy, distorted or non-sinusoidal waveforms. Complete with test leads and two AAA batteries. UL listed with a CAT IV 600V safety rating.