Features:. Perfect for Railway & Building Layout! Made with white LEDs.Complete with wires and LEDs and can be lighted. The resistor had been pre-wired in series with the signal to use on 9V to 12V. Please apply correct Operating Current 20mA to each LED too. Specification:Brand:Evemodel.Size: as the picture shows. Reference Scale: 1:87,Suitable for N Scale.Operating Voltage: 12V, AC or DC Compatible.Operating Current: 20mA.Material: Stainless Steel Pipe Post and Plastic black part. Emitting color:Green/Red.Package included:3pcs Model signals.3*Resistors Notice:The resistor had been pre-solderedfor 9-18V operation. Note:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.