Price for 2 complete crossing signal + 1 flasher boardcomplete with wires and LEDs and can be lighted alternately.common anode with 3 lead wiresgate up down on left side ( default ), message me right after payment if you need the up down on right side signalsSpecifications:Brand: WeHonest Model.Size: Please check it from the above photo.Reference scale: suitable for O scale layouts.The circuit board work on DC 3V to 24V only, DON”T apply 110V/220V power to the circuit board directly or the board will be defected, please use a DC transf...