I had the first gen Kevo and installed the 2nd Gen Kevo in its place. I like the single wire connection and the smaller interior side better then the 1st Gen. The lock has been inconsistent in locking and unlocking at first, it is slowly getting better but wish it was more reliable. I made sure to follow the direction on routing the wire but I still need to have my phone out and opened to the app for it to work consistently. I hope it gets better to where I can leave my phone in my pocket. I would recommend the Kevo 2nd Gen but it is with some hesitation as it does not work consistently the way I feel it should.