Specification: 1. Input Specialty 1.1 Rated input voltage: 12VDC 1.2 Input voltage range: 10-16VDC 1.3 Standby input power:<10w 2. Output Specialty 2.1 Rated output voltage: 4000W 2.2 Peak power: 8000W 2.3 Output voltage: 220VAC 10% 2.4 Frequency: 50Hz 1Hz 2.5 Wave form: Pure sine wave 2.6 Charge current: 20A Application: Wind generation, solar panel, home, office, car, board ect. Ideally suitable for Journeys, Camping, Tents, Boat Trip, Working on the way and everywhere, where is no electricity! Load: Air conditioner, microwave, vacuum cleaner, refregirator, electric drills, computer, television etc. All Protection Over-load Over-voltage Low-voltage Buzzer Alarm Short-circuit (Optional) Over-temperature How is it works? Simply connect with 12V/24V Battery as in a Car, Motorcycle, Camper or Boat and use 110V/ 220V electrical appliances. Main Advantage: Pure sine wave output (THD<5%) High efficiency Multi protection functions Built-in high speed cooling fan Saving-energy 1% free spare parts with order + 1 years global warranty Can be used for various kind of electronic products with AC input. Outside shell make of aluminum alloy, good to dissipate heat to ensure the unit's lifespan more long than other. Contact us get more infomations. Skype: hanyinyan315 E-mail: sales1@gzqueenswing.com