Price is for 1 signalsGreen at bottom/Yellow/Red on topSMD LEDs made, HO scale CharacteristicPrice is for 1 traffic lights ( no controller )Height : Approx. 70mm or 2.76 inch Heightwith 4 lead wires, black wires are common anode wires, color wires are cathode wires, all LEDs can be lighted up independently.each LED for 3V DC and 20mAthe signal head is made from Plastic Brand newPRODUCT DESCRIPTION you may control them manually by 4 position switch.oruse sequencer and make them life like.Click Here To Buy the Signal Controller...