250w Grid Tie Power Inverter Converter Solar 10.8v-30v DC 110v AC Normal AC Output Power:200W; Maximum AC Output Power:250W AC Output Voltage Range: Switch is at 230V Position, 190V ~ 260V,Switch is at 115V Position,90V ~ 130V DC Input Voltage Range: 10.8V ~ 30V AC Output Frequency Range: 46Hz ~ 65Hz. Peak Inverter Efficiency: 92% features:MPPT Function/Over Current Protection/Over Temperature Protection/Reverse Polarity Protection/Island Protection/Stackable