This part is an AEMC True RMS Clamp-On Digital Multimeter. It is a highly accurate tool that measures AC/DC voltage, AC/DC current, and temperature in three different modes. The clamp-on design allows it to be used conveniently with almost any conductor, up to 300MCM, without disconnecting power or breaking the circuit. It also contains a built-in non-contact voltage detector for quick and easy identification of energized circuits, as well as a backlit LCD to view measurements clearly in dark or poorly lit settings. Other features include automatic ranging, auto power off, low-battery indication, and a safety rating to CAT III 600V.