Price is for 1 completeGreen/Yellow/Red TRAFFIC SIGNALSHO / OO scale gray Column with 7 lead wires, the black wire is common anode wire, and the color wires are cathode for each LED CharacteristicPrice is for 1 complete signalsSize for each : please check from the photosfor HO scale or OO gauge layoutsMetal made.Brand newPRODUCT DESCRIPTION you may control them manually by 4 position switch.orClick Here To Buy the Signal Controller...