Price is for 1 signals on topSMD LEDs made, HO scale will run the following sequence when power on please follow the above wiring, no further paper instruction. CharacteristicPrice is for 1 traffic lightsHeight : Approx. 50mm or 1.97 inch Heightwith 4 lead wires, black wires is common anode wire, 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 Simply simulate, not life like.Brand newPRODUCT DESCRIPTION you may control them manually by 4 position switch too.oruse another controller and make them lif...