It's a simple three phase four module DIN rail meter with flame retardant ABS case, which is widely used in sub-metering system. It's of concise appearance, compact size and good quality, durable to use. Features: 3-phase 4-wire energy meter with high accuracy is designed for the measurement of rated frequency 50 or 60Hz single-phase AC active electricity. High-quality flame retardant ABS case, with good impact resistance, heat/ cold resistance, insulativity and durability. With 6+2 digits backlight LCD display, the meter accurately counts and clearly displays the energy consumption. Adopts 35mm DIN standard guide rail installation, compact size and light weight make installation easier. Pure copper wiring terminal with excellent conductivity and corrosion resistance can ensure large current during long-time performance. Note: Size and color may be slightly different due to manual measurement and different lighting conditions. Thanks for understanding. Specifications: Case Color: Transparent/ White (Optional) Material: Flame Retardant ABS Display: LCD Display with Backlight Current: 3x20(80)A Voltage: 3x220/380V Accuracy Cla: 1.0 Standard: IEC62053-21 Frequency: 50/ 60Hz Impulse Constant: 400imp/kWh Power Consumption: 2W Starting Current: 0.004lb Working Temperature: -20~55 Storage Temperature: -25~70 Item Size: 100 * 76 * 65mm / in Item Weight: 380g / 13.40oz Package Size: 110 * 80 * 70mm / in Package Weight: 400g / 14.11oz Package List: 1 * Energy Meter 1 * User Manual