In the box, awaiting installation after kitchen remodel. I chose 1 sensor model, as I don't need a lot of extras that could fail. Smart model sounded cool and was tempting, but other reviews mentioned the most reliable part of smart model was the on/off - which a sensor accomplishes. Also, chose 1 sensor model as others mentioned placement of second sensor can be annoying turning on and off at unwanted times. Since we purchased a workstation sink - I could see this being an issue. And, do I really need almost double my purchase price just for a second sensor? I anticipate this living up to Moen performance quality. Excited about the spray. If anything less than expected, will update.