low-frequency pure sine wave inverter with AC charger and auto transfer switch system. Capacity: 1kw 1.5kw 2kw 3kw 4kw 5kw 6kw Voltage: 12V 24V 48V AC output: 110V, 120V, 220V, 240V 50/60Hzsingle phase Application: solar power system, wind solar system, hybrid solar-wind system, home backup system