This signal adds that little bit more realism to your layout, the fact that it moves rather than just being a static model. I have added a sensor that activates the signal automatically whilst the trains are running rather than being a manual switched operation. That in itself is excellent, again because it can be operated remotely by a one touch button or switch. Being on one side of the layout and watching the signal operating on the other is really rather satisfying. The added LED light changes colour when the signal operates using red and green portals. A really clever and well made design makes this a must have addition to any model railway.