The Mastech MS2033A is a versatile digital clamp meter designed to measure AC/DC voltage, AC current, resistance, continuity, frequency, and duty cycle. With its auto-ranging feature, it simplifies measurements by automatically selecting the appropriate range for the task. This clamp meter also boasts a large backlit LCD display for clear readings, even in dimly lit areas. Safety features include protection against overloads and incorrect connections, ensuring user safety during measurements.