frequency meter 1.CE UL SAA approved 2.TOP ... by user 14mm,7 Segmental , three line four digital LED display. Relative accuracy is 0.2 and 0.5 Protection ... the Electric Power Cabinet easily Can measure current, voltage, frequency, power factor, active power and reactive power. The decimal ... front frame so thatthe class will not be influenced.Frequency Meter Class:1.0Volt:50V 100V 220V 380VFreq:44 ...