price for 1 complete signal ( common anode )SMD LEDs made2 independent targets, upper target may show Red/Amber/Green, lower may show red/cold white/green.used either at a Control Point as an absolute signal where two routes diverge, or at the intermediate point as a distant signal4 wires for each target, the black wire is Common Anode wire, the color wires are cathode wires.with thread base for easy installation ( message me right after payment if you need it with plat base )ladder position on right side ( default ) ( message me right after payment if you need it on left side )Specifications:Brand: WeHonest Model.Size: Please check it from the above photo.Reference Scale...