... ,CT(means V=PT*imput V,A = CT*imoutA ,display P =power value*PT*CT).can swithover display voltage by panel ... ,the second row ,the third row LED display separately represent P,Q,COS,it's unit is W,Var.indicator K ... .1 the second display 5995,the energy is 278.1599). Three phase modbus (JYS-9Y4)