... FunctionDC/AC Voltage, DC/ AC Current,Resistance, Capacitance, Frequency and Duty cycle,Diode\ Continuity test Analog AC/DC Voltage ... /Frequency/Duty/Resistance Signal Output.FREQUENCY:20Hz-3KHz% Duty cycle:10%-90%DC ... voltage: 0.4VDCoverload prctection: 250VDC or RMS AC.FREQUENCY(Auto ranging)Ranges:100Hz,1KHz,100KHz,200KHzResolution:0.01HzSensitivity: ...