This Extech ETK30 Electrical Test Kit is assembled to provide all the electrical testing needs for the installation and repair of electrical systems and HVAC equipment. It is a True RMS Digital Multimeter that auto ranges, has a 2000 count large LCD display, and has a CAT III 600 V safety rating. It features low current capability with resolution to 0.1 µA, as well as max hold, data hold, and auto power off functions. The kit also includes the MA430, a 400 A AC Clamp Meter + NCV with 6 functions including AC Current, AC/DC Voltage, resistance, diode, and continuity. The MA430 also has a 3 cm (1.2 in) jaw size for conductors up to 350 MCM, a backlit display, data hold, auto power off, and low battery indication.