[Application] For measuring single-phase AC active electrical energy at a rated frequency of 50Hz or 60Hz, for fixed indoor installation. Applicable ambient temperature is -25℃ to 55℃, relative humidity ≤ 95%, and the air must be free from corrosive gases and protected from dust, mold, salt spray, etc. [LCD display] The 6+2 digit LCD display shows the total amount of electricity. [Accuracy] The device fully complies with the technical requirements of the international standard IEC62053 for single-phase energy meters of class 1 or 2, enabling direct and accurate measurement of active electrical energy consumption. [Anti-interference] With good electromagnetic interference resistance, low power consumption, high accuracy, high overload capacity, high stability, anti-theft, and long service life, etc. [Advanced] Features include high reliability, small size, light weight, beautiful appearance, advanced technology, standard 35mm DIN rail installation, etc.