Price is for 1 Double Sides Signals HO scale will run the following sequence when power on please follow the above wiring, no further paper instruction. CharacteristicPrice is for 1 traffic lights Height : 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 an...