Model : DCM2000DR AC/DC CLAMP METER Brand : Sanwa Dual Display Shows Voltage/ Current and Its Frequency True RMS EF (Electric Field) Sensing VFD (Variable Frequency Drive) Frequency Measurement Low Input Impedance Voltage Measurement Capable of Attenuating The Effects of Ghost Voltage Data Hold, Range Hold Relative Value Peak Hold (5m Sec.) Auto Power Save (30 Min.) (Cancelable) Auto Power Off Function (30 Min.) Sampling Rate : Approx. 5 Times/ Sec.