... system2. 6 +1 digits LCD display (999999.9 kWh)3. kWh accuracy class 0.5S4. LED ... resistant materials9. Spring type buckle, easy to installBasic Function 1. Measure and display kWh value2. One RS485 ... , I, P, Q, S, PF, FOptional Function 1. Multi-tariff2. Reactive energy measuring3. Demand analysis ParameterAccuracyVoltage0.2%Current0 ... 01Active energy0.5%Reactive energy2.0% Three phase electronic meter