Decking out my place with these lights turned out to be a great decision; they didn't disappoint. Someone mentioned they might not work with an external timer, but that's not the case. Just gotta switch off the built in timer and you're golden. I've decked out my place with these for all sorts of occasions from spooky vibes at the end of the year to all the love in the air in mid Februrary, and even got a bit of green going for the Irish holiday. They're versatile like that.