A pure sine wave inverter is a device that converts direct current (DC) power from a battery or other DC power source into high-quality alternating current (AC) that you can use in your RV, boat, or throughout your home. It works by using a microprocessor to produce a clean and stable sine wave that closely resembles the AC power you get from the grid. This type of inverter is ideal for running sensitive electronics, such as laptops, TVs, and medical equipment.