RK9800N Series Intelligent Electric Quantity Measuring Instrument (Digital Power Meter), Bisa Ngukur Tegangan, Arus, Daya, Faktor Daya, Frekuensi, Energi Listrik lan Parameter Liyane.RK9940N: 0~600V 0~8A 7~40A 24kW RK9980N: 0~600V 0~16A 15~80A 48kW RK9813N: 0~600v 0~0.1A 0.08~20A 3.5A