Does one volt really matter on an input rating?

Question by AJ: Does one volt really matter on an input rating?
I have a model railroad crossing signal controller that says on the package 19VAC but I have only 18VAC. I have tested this but it won’t work for either that reason or some other reason. So does one volt really make a difference in this situation? If so, what can I do to fix this and please thoroughly explain how.

Best answer:

Answer by rocksoldier
try an online search for a 19vac

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