Pure sine wave inverter 300W, 12V

Output Power Continuous - 300W Input Input Nominal Voltage - 230Vac Input Voltage Range - 120V~275Vac  Line Low Transfer - 120Vac ± 2%  Line Low Return - 130Vac ± 2%  Line High Transfer - 285Vac ± 2%  Line High Return - 260Vac ± 2%  Input Frequency 50Hz (45Hz~70Hz)  Output Output Voltage 220Vac / 230Vac / 240Vac  Waveform - Pure Sine Wave  Voltage Regulation (Batt. Mode) < 3% RMS for entire battery voltage range  Output Frequency - 50Hz ± 0.1Hz  Efficiency > 85%  Maximum Load - Up to short circuit  Asymmetrical Load Max. - Up to nominal output power  Overload and Short Circuit Protection - Automatic disconnection  Overheating Temperature Protection - Acoustic warning before shut-off. Power Factor - 0.8 Battery Voltage Range 12VDC (10.5~14.3VDC)  Max. Charging Current 25A Display  LCD Display - INVERTER status, I/P&O/P Voltage Frequency, Load%,Battery Voltage & %, Temperature, Mode  LED Display - Normal (Green), Warning (Yellow), Fault (Red)  Audible Alarm  Battery Mode - Beeping every 4 seconds  Low Battery - Beeping every second  Overload - Beeping twice per second  General date  AC By Pass Time (UPS Mode) 5ms Operation Temperature -20 °C to +55 °C  Audible Noise Less than 55dBA (at 1M)  Relative Humidity 0-95% non-condensing  Physical data Unit Dimensions (L x W x H mm) - 320*130*190 Unit Weight 9kg Inner box size(mm) 420*230*300