solar PV system : 1,TUV ,CE, RoHS ,ISO900. 2,1 years quality warranty. 3,High transmissivity low iron toughened ... 15°C~+50°CInverterOutput voltage100/110/120/220/230/240VAC±2%(Battery) Protection Voltage9.7-10.3VDCInput Voltage145V-275VInput Frenquency40-60HZOutput ... Frequency55±2 60±2 50±2 low & ligh 5%PAL Pressure alarm high 10 ...