Replacement for AVR SE350 for Marathon and stamford alternator.Replacement for AVR SE350 Voltage Regualtor is an encapsulated electronic voltage regulator that controls the output of a brushless AC generator by regulating the current into the exciter field.Input Voltage: 190-240V ac.Roll off Frequency 54-61Hz for 60Hz.Carton box,size: 120*75*60mm. Product Description Carton box,size: 120*75*60mm. Input Voltage: 190-240V ac. Roll off Frequency 54-61Hz for 60Hz. Roll off Frequency 54-61Hz for 60Hz 45-51Hz for 50Hz Output Power-Continuous 73V dc at 3.5A dc(255w) Regulation 1.0 Package Including 1 x Generator Voltage Regulator