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: Features high reliability, small volume, light weight, beautiful appearance, advanced technology, and 35mm DIN standard rail mounting. Long Service Life: The electronic KWh meter has good anti-electromagnetic interference, low power consumption, high precision, high overload capacity, high stability, and anti-theft features. LCD Display: This energy meter measures positive active energy in electrical energy measurement, clearly displayed on the LCD backlight screen. This single-phase energy meter circularly displays voltage, current, power, and energy (KWh). Application: This energy meter is suitable for measuring nominal frequency 50Hz or 60Hz single-phase AC power, used for fixed indoor installation.