Descriptions: The meter is fully in conformity with the relevant technical requirements of GB/T17215.321-2008 national standard and the IEC62053 international standard of grade 1 or level 2 single-phase energy meter, which can directly and accurately measure active energy of the energy consumption. It features high reliability, small volume, lightweight, beautiful appearance, advanced technology, and 35mmDIN standard guide rail installation, etc. Features: The meter is fully in conformity with the relevant technical requirements of GB/T17215.321-2008 national standard and the IEC62053 international standard of grade 1 or level 2 single-phase energy meter, which can directly and accurately measure active energy of the energy consumption. 6+2 digits LCD display shows the total power consumption. It features high reliability, small volume, light weight, beautiful appearance, advanced technology, and 35mmDIN standard guide rail installation, etc. It has good anti-electromagnetic interference, low power consumption, high precision, high overload, high stability, anti electricity-stolen and long life. This table is suitable for the measurement of rated frequency 50 Hz or 60 Hz single-phase ac active electricity, used for fixed installation indoors, apply to the environment temperature is -25 ℃ ~ 55 ℃, relative humidity is ≤ 95%, and in the air does not contain corrosive gases and avoid dust, mold, salt fog, condensation, insects, etc. Specifications: Materiel: Metal + ABS Reference Current: 3 X 20(80A) Accuracy Level: 1.0 Rated Frequency: 50Hz Constant Pulse: 400imp / kWh Display: LCD 6 + 2 Power Consumption: ≤2W, 10VA Starting Current: 0.004Ib Operating Temperature: -20 ~ 55℃ Storage Temperature: 25 ~ 70℃ Average Humidity Value of Year: ≤75% Type: Three Phase Four Wire Electronic Type Size: Approx. 10.1 X 7.6 X 6.5cm / 3.97 X 2.99 X 2.55in Weight: 415g Package List: 1 X Three Phase Four Wire Electric Meter .