产品特点：·Dual Display Digital V-A-W·True Watt & True RMS Current·Power Factor:0~1产品规格： WATT MEASUREMENT Range 19.99W, 199.9W, 1999W Accuracy ±(0.3%+3d) FREQ. Response 40Hz~70Hz MAX. Voltage 299.9V MAX. Current 200mA for 19.99W, 2A for 199.9W, 20A for 1999W Power Factor 0~1, Leading or Lagging Shunt Resistance 0.01Ω AC VOLTAGE MEASUREMENT Range 0~299.9V Accuracy ±(0.25%+2d) FREQ. Response 40Hz~1KHz Protection 700V Impedance 1000KΩ AC CURRENT MEASUREMENT Range 1999A, 1.999A, 19.99A Accuracy ±(0.3%+2d) FREQ. Response 40Hz~200Hz for. 1999A 40Hz~1KHz for. 1.999A~19.99A Shunt Resistance 0.01Ω Crest Factor MIN 60.1 Linear Decreasing to 3:1 GENERAL MIN. Input 10% of Range for AII True RMS Converters Power Source AC 115V/230V, ±10%, 60Hz/50Hz Dimension 262(W)×85(H)×270(D)mm Net Weight 1.5Kg Accessories Operation Manual×1