... treatment technology and SMT DSSD722 3 phase 3 wire electronic multi-function smart electric meter DDSD722 three phase energy meters use transparent PC ... 1.5(6)A,3*5(10)A,,3*10(40)A,3*5(40)A,3*10(120)APulse constant Imp/kwh ... 1.5(6)A,3*5(10)A,,3*10(40)A,3*5(40)A,3*10(120)ANormal operation temperature-25 ... 800 400DisplayLVD backlight DSSD722 3 phase 3 wire electronic multi-function smart electric meter