... -scale integrated circuit and highly reliable stepping motors etc. Type DDS881 single phase electronic energy meter is the newest power counting ... technical parameter:TypeAccurancy(class) Reference voltage(v) Rated current(A) DDS881 1.0 2.0 220 1.5(6),2.5 ... (20),10(40),15(60),20(80),30(100)Dimension: DDS881 electronic energy meter(KWH Meter)