This 3-phase 4-wire energy meter accurately measures single-phase AC active electricity at a nominal frequency of 50 or 60Hz. High accuracy and a high-quality flame-retardant ABS housing provide excellent impact resistance, heat/cold resistance, insulation, and durability. A 6+2 digit backlit LCD display clearly shows energy consumption. Easy installation with 35mm DIN rail mounting, compact size, and lightweight design. Features pure copper wire terminals for excellent conductivity and corrosion resistance, ensuring long-lasting performance. Backlit LCD display, 3x20(80)A current, 3x220/380V voltage, and 10 accuracy class. Meets IEC62053-21 standard, 50/60Hz frequency, 400imp/kWh pulse constant, and power consumption ≤2W. Starting current is 0.004A. Operating temperature range: -20~55°C; Storage temperature range: -25~70°C. Made of ABS material, transparent color. Package Contents: 1 * DTM024 Energy Meter 1 * English Instructions Note: Only the above package content are included, other products are not included. The actual color of the item may vary slightly due to light and different screens. The measurement allowed error is +/- 1-3cm. 100% Satisfaction Guarantee: Our customers are our top priority. If you encounter any product issues after receiving the goods, such as damage and incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.