... 3 alarm output,nalog 4-20mA. Single phase 8 digits Electrical meter(WH) TypeSingle phase electric meterBrandMYPINModeMDW seriesBasic Current0-5A(A) ... and current input eg.0-5A/0-600V,current transformer ratio setfreely,true effective value measurement,mainly electricity value ... digit high precise energy reading,demical floating display, power down memory function for 100 years.3, Output:3 alarms ...