I bought this on a whim after stumbling on it and it is a pretty amazing product. May seem like a little thing, but not having to stop at the keypad is way more of a luxury than I was expecting. The design is super sleek too, you would just think it was a di2 junction box if you didn't know otherwise.
I did have issues getting it to connect and I contacted 12 Speed directly and they were super easy to work with and were able to help troubleshoot with no issues. Definitely recommend reaching out to them--I almost returned it after my first few attempts on my own and glad I didn't.
Overall, highly recommended.
Works great and very easy to setup but, and this is entirely on me for not checking first, it's not necessarily compatible with all handlebars (Enve SES Aero Road Handlebar in my case). No problem though, gave it to a friend to enjoy. :)
Programming was pretty easy and I haven't had any issues with reception. Installation suggests removing and reinstalling your bar tape, but I made it work without retaping. Overall it's a neat little device that saves the hassle of keying in my code to the garage door after a long ride.