1000W DC 12V to AC 220V Modified Sine Wave Power Inverter With USB Port Convert DC 12V electricity source into AC 220V power. High voltage protection , Low voltage protection,Over load protection,Over temperatuer protection,Overcurrent protection,Output short-circuit protection,Positive and negative reverse polarity protection,Damage protection Widely used for all kinds of electric equipments which power consumption are less than 1000W and which voltage are equal to AC 220V, such as cell-phone, portable computer, printer, electric light, digital camera, vidicon, TV, CD player, DVD etc. This is NOT a pure sine wave inverter, it cann't be used for pure sine wave appliance, such as electric tools, drill, etc. It can be made from advanced PWM CMOS chip, and can work in the state of ultrasonic sound, which can both in a great extent minish the bulk and weight and make the circuit work without noise. The output of the product is a universal socket, which can be used in many countries.The newly-added USB output socket can be directly used to charge for MP3 and mobile phone.