This electrical test kit from Klein Tools is perfect for HVAC professionals and electricians alike. The digital clamp meter can measure various functions including resistance, frequency, temperature, AC current, DC voltage, capacitance, continuity, AC voltage, and diode test. With features like auto power off, auto-ranging, backlight, data hold, true RMS, and min-max value mode, this clamp meter is a reliable tool for any job. The kit also includes a battery door access and comes with a California Prop 65 Warning. Whether you're working on commercial or residential projects, this Klein Tools CL320KIT will help you get the job done quickly and efficiently.