This product bundle features one quantity each of two powerful, rugged and useful items; 1. a very powerful and rugged 30Amps automatic changeover that transfers power automatically between Public power and generator and also shuts down the Gen whenever public power is restored. With the changeover installed, users can also stop their generator from the comfort of their appartment.2. a very rugged power optimizer socket that lets you power some of your electrical heating appliances with your small generator. For example, you can use your 1000Watts iron on your 950VA generator. The automatic changeover comes with a 12 months warranty, is rated 30Amps and can be used for electrical loads up to 5kVA. The power optimizer socket is a 13Amps socket.