Very prompt delivery. Needed this to replace a failed unit, which is the second time of doing so. Chose this because its spec is slightly higher than the overall power demand i need, which i hope will make it last longer than the others, which certainly appear of inferior construction quality compared side by side. Yes, it comes with no instructions but if you can wire a plug then you'll be okay, if not employ an electrician. It was an easy replacement job and my lights are now working again, and hopefully for a long time to come. Can only give 4 out of 5 because its just installed, but have no reason to suspect it won't turn out to be a 5 star buy.