Genuine Ziewnic solar hybrid inverter, PREMIUM PLUS HYBRID (PV5000), for home and commercial backup power. Key specs: Rated Power: 4200VA/4200W. Ac Input: 230 VAC. Voltage: 170~280 VAC (For Personal Computer). Selectable Voltage Range: 90~280VAC (For Home Appliances). Frequency Range: 50 HZ / 60 HZ (Auto Sensing). AC Voltage Regulation(BATT. MODE): 230 VAC ± 5%.