... common-mode voltage: 600V AC RMS 2) Mode of display: LCD display; Max. reading: 6000 Features ... 4-wire, single-phase mode 3) V, A, W, VA, VAR, KWh, PF, Hz ... common-mode voltage: 600V AC RMS2) Mode of display: LCD display; Max. reading: 6000 3) ... for testing frequency so as to assure the reading stability) 5) Over-range display: “ ... ~ 28°C, Humidity 80%, frequency for voltage, current: 45 Hz ~ 65 Hz Three ...