NIMTEK NS300 Pure Sine Wave Off-grid Inverter, Solar Inverter 300 Watt 12 Volt DC To 110 Volt AC Expedited shipping from China(usually take 3 to 7 business days to arrive) Converts 12V DC to 110V AC of pure sine wave power. Ideal for running small electronic tools, air pumps, electronic doors, small motors, refrigerators, HDTVs, electronic game systems, computers, laptops and inkjet laser printers. Strong adaptability and stability ; Temperature-controlled fan, safe & efficient; With automatic over-current and output short circuit protection to avoid damaging the equipment; High transform efficiency, fast start; Safe and reliable with built-in fuse. Pure sine wave output waveform; Softstart function.