... . 96X96MM specification 2. AC combined digital meter. Model: YD4PQH-9X4Technical parameterPerformanceParameterNetwork3 ... CLASS 0.2Frequency40~60Hz, accuracy 0.2HzFunctionActive power, Reactive power, Apparent power, Accuracy: 0.5 classElectric energyFour quadrant ... measurement, active poweraccuracy rate0.5 class, reactive power accuracy rate0.5 classDisplayProgrammable, switching, circular two, ...