This simple junction connection makes a solid electrical connection from the power supply plug to your dollhouse or display and has the added protective feature of a fast blow fuse. It comes with double stick tape on the back as well as a single screw to attach it to your house. The fuse would be the same value as the power supply you use. In other words: If you purchase a 1 amp power supply, the fuse should be a 1 amp fuse. It protects the power supply and acts like a circuit protector. The 701-1 power connector is also able to be connected to the dollhouse by either flat tape or round wire. Complete directions come with the connector.