The meter adopts large-scale integrated circuit with advanced special measuring chip, reliable electronic components and SMT (Surface Mounting Technology). So it is characterized with high accuracy, reasonable structure, light weight and easy installation. And the product have strong anti-tampering capability due to measurement in forward and reverse direction and cumulative energy as well as the function of indicating the wiring method and working status. All the performances of the meter comply with the requirements specified in IEC 1036. The design and manufacture are strictly in accordance with ISO9001-2000 Quality System so that the products are high quality and high performance. Key Features and Parameters: ● Accuracy class: 1.0 and 2.0 ● Rated voltage: 220V ● Rated frequency: 50Hz, 60Hz ● Rated current: 2.5(10)A, 5(20)A, 10(40)A, 20(80)A (capable of offering various current specifications at customer's request) ● Anti-creeping logic circuit ● Anti-tampering function due to measuring power consumption in one direction irrespective of the current direction (reverse wiring, bypass, earthing indication and calibration pulse) ● Overall Dimension: 150mm?08mm?2mm (full-plastic case)