I purchased this along with two spot lights for my 25' flagpole. Although I only installed one light, this transformer is by far the best I've seen (and I do research first). Small, neat, easy to use, etc. I'm hard wiring mine to a box, but the attached cord is easy too, if you have an outdoor recepticle. I would use a covered outdoor box if you use the plug. I'm using the dusk/dawn feature for the flag. That's all it's intended to do and so far, I have NO complaints.