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