Bought a 3155 ato from amazon over a month ago for a new build. Last night got the ato all hooked up and ready to plug in and boom its a euro plug..I live in US. Called Tunze this morning a live person answered on the third ring and let me know they knew of the problem and would priority mail me a new 12v adapter and it would be sent out today. This is how customer service should work. Thanks again.