The Reliance Controls CSR202 Easy/Tran Transfer Switch is for generators up to 5,000 running watts. It is easy to install, easy to use, and ideal for controlling single-circuit farm buildings, irrigation systems, community wells, telecommunication substations, traffic signals, commercial garage doors, cell towers, sewer and water lift stations, septic pumps, industrial sump pumps, electric water heaters, electric heat and more. The transfer switch ensures that you can safely use back up power during a power outage without having to worry about back feeding the utility line. In an emergency situation, this could make all the difference. Since 1909, Reliance Controls Corporation has contributed more innovations than any other single manufacturer and has been awarded over 85 patents on manual transfer switches, time switches and accessories. Reliance Controls Corporation specializes in the manufacturing of a wide variety of electrical products. The primary product line consists of heavy duty time clocks and controls, generator accessories, transfer switches and transfer panels for portable generators. And after over a century of innovation, Reliance Controls Corporation has built an enviable reputation for high quality, superior engineering and exceptional customer service.