How can the daylight lamp in the advertisement lamp box be connected? Thank you
How do I get it? The commutator is OK. It's easy
One of the two ballasts, electronic ballasts, the original life is not long. It is easy to bad, or good
Drag two ballast above the black and white two line, a group of a tube, and finally connect ballast can wire, if the time changed, the first check is not a set of ballast to replace, it is to consider to change a single ballast, if replaced. It will change the lamp.
You can choose led lamp! You can save electricity and brightness!
