N Scale Model 10 Grade Crossing Signal (one per kit-If more than one is purchased they will be packaged together in same package. For one crossing two kits will be required)by Showcase Miniatures These signals have been upgraded to hold our Micro Tri Color 4 wire LEDs right inside the signal head. Our N Scale Grade Crossing Signal can be lighted with our 402 LEDs sold on our Showcase Miniatures website….AND….it contains parts for you to make it operate! The kit will include stainless photo-etch details, brass tubing, pewter, and resin parts to make ONE SIDE crossing. Two kits will be required for both sides of your crossing. The movement of the arm in the video is done manually. To see the video go to our Showcase Miniatures website. If you want the arm to be operational you will need a controller. This kit can be built with or without the arm. If you are looking for a Grade Crossing Controller, please see our blog post here Detailed instructions are included and pictured among the photos. Models and Kits produced by Showcase Miniatures, including Century Foundry products, are intended for model builders 15 years of age and older. These products are not children's toys.