DC/AC Analog Panel Current Meter: 1.class:1.5;2.5 2.specifi: 300mA 500mA ... 20A 25A 30A 40A 50A 60A Anolog panel meter,current meter,ammeter,voltage meter,frequency meter: The scope of applicationThe series product is magnetic ... system and distribution system to indicate relativeparameter,such as AC,DC,Voltage,power synchronous volume,frequency,expended voltage and overload current etc ...