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

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

                    2.balanced load active power meter：SD-S96-GCW AC KW,SD-S72-GCW AC KW,SD-S48-GCW AC KW