产品名称：SD series square wide angle three-phase four wire power meter

Model No.：   1. Unbalanced load active power meter:SD-S96-GDW AC KW,SD-S72-GDW AC KW,SD-S48-GDW AC KW

                   2. Balanced load active power meter:SD-S96-GEW AC KW,SD-S72-GEW AC KW,SD-S48-GEW AC KW