Parameter: Accuracy: Class 1; Voltage: 220V; Current: 5(80)A ; Insulation performance: AC voltage 4kv for 1 minute,1.2/50us waveform impulse voltage 6kv; Size: 8.3 x 6.5cm / 3.27 x 2.56in Excellent performance: It features high reliability, small volume, light weight, beautiful appearance, advanced technology, and 35mm DIN standard guide rail installation Long service life: The Electronic KWh Meter has good anti-electromagnetic interference, low power consumption, high precision, high overload, high stability and anti-stealing LCD Display: This energy meter can measure positive active energy in electric energy measurement, which is clearly displayed by LCD backlight screen. This Single Phase Energy Meter will circularly displays voltage, current, power and energy KWh Application: This energy meter is suitable for the measurement of rated frequency 50Hz or 60Hz single-phase ac active electricity, used for fixed installation indoors