SPECIFICATION:Used for AC single phase active energy measuring. Wall-mounted installation type, smart designDisplay type: LCD, unit is kWh, ... active Indicate of bypass stealing electricityDisplay data after power off Total transparent long type terminal cover designNear ... single phase two wires, L, L, N, NL,N,N,L Impulse constant:1200imp/kWhStandard level:1.0class,2.0classPower consumption of meter ...