Features: Three-phase four-wire electronic energy meter with a reference current of 100A. High accuracy level of 1.0 and constant pulse of 400 imp/kWh for precise energy monitoring. LCD display with 6.2 digits for clear visibility of readings. Low power consumption of ≤2W, 10VA, ensuring energy efficiency. Durable construction with a combination of metal and ABS material, weighing only 350g for easy installation and handling. Specifications: Material: Metal, ABS Reference Voltage: 3127/220V, 3230/400V Reference Current: 100A Accuracy Level: 1.0 Rated Frequency: 50Hz/60Hz Constant Pulse: 400 imp/kWh Display: LCD 6.2 Power Consumption: ≤2W, 10VA Starting Current: 0.004Ib Operating Temperature: -20 ~ 55°C Storage Temperature: 25 ~ 70°C Operating Voltage: 0.9-1.1 Rated Voltage Utmost Voltage: 0.8-1.15 Rated Voltage Average Humidity Value of Year: ≤75% Type: Three Phase Four Wire Electronic Type Weight: 350g Optional Shell Color: White / Transparent Package Included: 1 x Energy meter (Shell color as your choice) 1 x English operation manual