Price is for 1 completeGreen/Red + Green/Red TRAFFIC SIGNALSHO / OO scale gray Column with 5 lead wires, the black wire is common anode wire, and the color wires are cathode for each LED Characteristic Price is for 2 complete signals Size for each : please check from the photos for HO scale or OO gauge layouts Metal made.Brand new PRODUCT DESCRIPTION you may control them manually by 4 position switch.orClick Here To Buy the Signal Controller...