... wave inverter 4,super charger inside 5,CE ,SONCAP solar system use solar inverter ups 2500w Main features:1.Pure sinewave output, ... over-charged and over-discharged etc.Typical Application:Main for home and office Appliance,TV,refrigerator,fan,air conditioner, ... waveCrest Factor3:'1Output FrequencyAuto Select for 50/60Hz,47Hz ~55Hz for 50Hz nominal,56Hz ~ 65Hz for 60Hz nominal(Synchronized to Mains) ...