... 72,CJ-48 Frequency:45-55HZ,45-65Hz,55-65Hz,47-53Hz,57-63Hz,44-56Hz,54-66Hz,450-550Hz,45-650Hz,550-650Hz ... :Class1.5Specification:VOLTAGE:50V,100V,220V,380V,440V,415V,Frequency:45-55HZ,45-65Hz,55-65Hz,47-53Hz,57-63Hz,44-56Hz, ... 54-66Hz,450-550Hz,45-650Hz,550-650Hz.Heat resistance:Case of non-combustible ... robust,side-by-side.Mounting depth:Max.43mm Panel Meter (Frequency Meters)