The Harsh Environment True Online Series 1000 UPS has been proven to work in the toughest of settings for many customers. These systems are commonly used in many offshore drilling applications where salt air and saltwater cause corrosion and rust issues. They are also ideal for dust-laden shop, factory, mill or power plant applications where dirt buildup and coal dust may be present. The rugged design of this system allows it to be used in higher temperatures without de-rating.