Reddit reviews GE Fluorescent Starter, FS-4, 2-Pack 54390
We found 2 Reddit comments about GE Fluorescent Starter, FS-4, 2-Pack 54390. Here are the top ones, ranked by their Reddit score.
For use with fluorescent tubesFS-4UL listed2-Pack
We found 2 Reddit comments about GE Fluorescent Starter, FS-4, 2-Pack 54390. Here are the top ones, ranked by their Reddit score.
That's actually a starter for the sign's (presumably) fluorescent lamp:
http://en.wikipedia.org/wiki/Fluorescent_lamp#Starting
Based on your picture, these look to be an adequate replacement:
http://www.amazon.com/GE-Fluorescent-Starter-2-Pack-54390/dp/B002DNAI4K
Looks like a fluorescent starter.