Hi,

This listing is for 1 HO scale cantilevered signal light. The main structure is entirely made of metal with a coat of gray paint applied. There is a black plastic signal head with 3 LEDs installed on the over track arm. Wiring for the LEDs run thru the structure and come out the base of the unit. 

Please be sure the note the exact product measurements provided in the photo.

The 3 LEDs , are all powered by DC 9-12v source current. About 5" of wire hangs from the underside, 3 colored wires, 1 green, 1 red, 1 yellow, with a common ground  prewired with resistor. Wiring setup is common anode.

There is no included circuitry to control the on/off of the LEDs as trains approach, etc.

Item ships from USA!

Policy & Warning Statement:
While Model Transformers have lower voltage and current settings than your standard wall outlets,
buyers still need to exercise caution and seek the advice of professionals to complete installation of the products we sell..
We do not look to be responsible for your safety or success of your electrical project,
so by policy we do not provide specific wiring advice for your project.

However, in the name of good customer service we do offer supplies and links to external sources for your reference.
Please follow this link to our modeling supplies:
http://stores.ebay.com/2boyisland/Model-Wiring-Supplies-/_i.html?_fsub=49352128013
Please follow this link to our general wiring advice page: (it is in the description section of the item)
http://www.ebay.com/itm/Electrical-Project-Test-Board-for-Model-Train-Layouts-HO-N-O-S-Scale-3-Inch-/282073673329