Instruction booklet contains incomplete diagram, if you're looking for the power socket, its in the side of the bottom divet for some reason.Contains for some reason a notifaction about broadcasting on the first page which makes me think they got their wires crossed when writing the book, past that everything else was easy to understand, I know what all the buttons do because of the infopacket,Purifier works as intended, got the medium cause we had the large at work and it's worked well for a loSee full review