... LP ,only just need use a switch in panel is ok.3.New green power generator set: ... ,SONCAPOutput scope:2KW,3KW,4KW,5KW,5.5KW.Frequency:50/60hzVoltage: Depend on client's choice.Power ... phase.Excitation transistorized: Self-excitation constant voltage(AVR)Panel tyep:Depend on client's choice.Alternator type: ... : Wheels and handle,ATS,Remote control,Digital panel,Depend on your choice.Warranty: 12months.