... voltage, DC voltage, AC current, DC current, resistance, capacitance, diode, continuity, frequency, and temperature measurement functions; 4, true RMS ... with 41 analog pointer, updated 32 times per second, fast directions show trends; 11, AC voltage wireless sensor function; ... 20kHz Frequency Range 400KHz 400KHz 200kHz Patent design: adjustable diode threshold voltage, there are no such audible alarm ...