Feature : 1 . Single-phase electricity meter can accurately measure active energy consumption with a load of a single-phase AC network of 50 Hz。 2 . By adopting the DIN rail mounting method, installation is more time saving and labor intensive. 3. Adopt microelectronic technology, adopt large-scale imported IC, and adopt advanced digital sample processing and SMT technology. 4 . The performance meets the relevant technical requirements of GB / T1721S.321-2008. 5 . Small size, light weight, beautiful appearance, easy installation. Specification: Item Type: Electronic Energy Meter Model: DDS6619-005 Basic current: 5 (A) Accuracy class: level 1 Reference voltage: 230 (V) Current factor: 1600imp / kWh Display mode: digital display Frequency: 50 (Hz) Maximum current: 80 (A) Ambient temperature: -35 65'C Relative humidity: no more than 95% Package List : 1 x Energy Meter 1 x Accessory Pack 1 x English Manual