Price is for 1 XGreen/Red Railroad Dwarf Signals 2 aspects HO Scale 1:87 or OO scale 1:76made of 3mm LEDs Pre-wired resistors for 12V or 16V use Cut off the resistor if use it on 3V DC Operating Voltage = 1.8V to 2.4VOperating Current = 18mA to 20mAprewired resistors for 12V or 16V use Your station platform or street scenes will be more lively with these items.Perfect for Model Train Set LandscapeControl them automatically by moving train ( click here )orControl them manually ( click here )\...