Major technical data; Accuracy class: 1. 0 Power consumption: <9. 0 Rated voltage: 220V Basic current: 2. 5(10) A 5(30) A 10(50) A Precision: 1. 0 Operating life: >20 years Main functions: 1) Measurement of 50Hz for 3-phase active power 2) 4 tariffs and 8 time periods for user''s option 3) RS 485 communication functions 4) Manual and remote control program, and remote-metering functions 5) To record the parameters automatically through CMRI Features: 1) High accuracy, reliability, overload capability 2) Low power consumption 3) SMT technology and re-flow soldering technology 4) Light weight, small size, easy to install