Specification? Model: WVC-1200W? Color: Silver? Material: Aluminium Alloy? Power: 1200W? Voltage: 110V? Plug Type: US Standard? Maximum Input DC Voltage: 54V? Peak Power Tracking Voltage: 22-45V? Operating Voltage Range: 17-50V? Min/Max Start-up Voltage: 22-50VDC? Maximum DC Short Circuit Current: 80A? Maximum Input Operating Current: 54.4A? Peak Power Output: 1200watt? Rated Output Power: 1150watt? Rated Output Current: 9.58A? Rated Voltage Range: 80-160VAC? Rated Frequency Range: 57-62.5Hz? Power Factor: >99%? Max Unit Per Branch Circut: 3pcs(Single-phase)? Static MPPT Efficiency: 99.5%? Maximum Output Efficiency: 91.2%? Night Time Power Loss.