The Hornby R911 Power Controller is a pre-built analogue speed controller specifically designed for OO gauge model railways. Made of plastic and with a wattage of 250W, this controller is compatible with DC power systems and is ready to go out of the box. With a scale of 1:76 and a voltage of 220V, this product from the renowned brand Hornby, originating from the United Kingdom, is a perfect addition to any model railway enthusiast's collection. The power controller has been plugged in and responds to power but it has not been tested beyond that .