Luminous inverter is one of the best noice free inverter in the market. luminous inverter is a purely sine wave inverter with great backup with luminous battery. the maintance cost of this inverter is very low as compare to other inverter available in the market. this inverter easy to use and easy to install. if yoy are looking for a inverter I suggests you for this. but selection of inverter type depends upon the battery MAH. so battery capacity should be keep in mind.