Triplett 9045 Compact Digital Multimeter DMM True RMS measures AC/DC Current, AC/DC voltage, capacitance, diodes, resistance, frequency, temperature, and continuity. The Triplett 9045 features an easy-to-read 6000 count illuminated display, 44 measurement ranges, indicates when battery is low, protection from overload, up to 1000V voltage range, and more. The Triplett 9045 Compact Digital Multimeter DMM True RMS is a very feature packed unit great for security, home theater, electrical, HVAC, you name it. With up to 44 measurement ranges and voltage range up to 1000V, the Triplett 9045 is a truly capable multimeter.