This is a nice inexpensive way to add traffic lights to the layout. However, the light has a switch that manually has to be moved to change the light color ( I am not sure if it can be used with the Walthers controller, but I may try and see if it does). The other major problem is that the lights are large and not in scale to be used for HO layouts if you are a stickler about remaining in gauge. Overall a nice inexpensive way to add some detail, but may be cancelled out because of the scale issue.
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