price for 2 complete traffic signalstraffic signal made by 5mm LEDs ( colors: top red / middle yellow / bottom green)Specifications:Brand: WeHonest Model.Reference Scale: Suitable O scale layouts.Operating Voltage: 3V DC ( don't use them on 12V directly unless you wire a resistor in series with each signal )Operating Current each LED: max. 20mAheight: please check from photosPackage included:2 x complete assembled signalsyou may let it work automatically by the following sequencer circuit board ...