SPECIFICATION:Used for AC single phase active energy measuring. Wall-mounted installation type, smart designDisplay type: ... : 5+1, 6+1Accuracy active energy measuring, no need degugging for long time workSTANDARDS:According to IEC62053-11 standardAccording to IEC62053 ... : single phase two wires, L, L, N, N L,N,N,LImpulse constant:1600imp/kWhStandard level:1.0class,2.0classPower consumption of meter: