... by "fault led" such as load reverse, single load, to earth, connect with resistor and so on (as special required)10. May ... . LCD display meter can select 9999999wh (equal to 9999.999kwh), which suit to measure small power consumption (as special required)13 ... short terminal cover, may select extension terminal cover, in order to protect to use safety. (as special required) DDS238 Single-phase Electrical ...