They are ideally suited for maintenance and repair work in industry, the service sector, electrical engineering, and electronics. With their integrated shock-resistant casing and IP67 protection rating, they are particularly robust and reliable in all environmental conditions. The measurement type of the DMM 210 and DMM 220 multimeters is AVG, while the DMM 230 and 240 multimeters use TRMS. The DMM 210 multimeter measures DC and AC voltages, DC and AC currents, frequencies, and resistances. It also allows for the measurement of diode voltage and continuity with a buzzer. Thus, it includes nearly all the classic measurement functions of a general-purpose multimeter. The backlit display with 6,000 digits (DMM 210/220/230) or 40,000 digits (DMM 240) and bar graph ensures excellent readability.