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 , heat or cold , insulativity and durability. With 6and2 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 can current during long-time performance. Display: LCD Display with Backlight Current: 3x20(80)A Voltage: 3x220 or 380V Accuracy Class: 10 Standard: IEC62053-21 Frequency: 50 or 60Hz Impulse Constant: 400imp or kWh Consumption: less than equal 2W Starting Current: 0004lb Working Temperature: -20-55 Storage Temperature: -25-70 Material:ABS colour:transparent Package Contents: 1 x Energy Meter DTM024 1 x English instructions Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.