So I'm still researching UCL's and i don't understand if something is low voltage or not. My contractor said NO low voltage so as I'm looking, I ignore those but some don't say either way. What is the difference b/w low voltage and regular? What is direct wire? I'm getting my terms all confused. I looked at the environmental light bars and it says 24V so does that mean they are "low voltage"? Can anyone recommend Light bars that are not low voltage?