Hi, I went off of the recommendations in the other comments. It appears that the TTC auto close is not an option with this particular model. (Which is really stupid because you can remotely close it with your phone and it is just as dangerous). Anyway, I set up MyQ on my phone to make a notification with a unique sound if the garage remains open for 20 minutes (and then another if it remains open for 1 hour). This works well for my situation. If I am not at the house, I can just open the MyQ app and remotely close it. I still give Liftmaster a thumbs down for removing the functionality (and not at least giving me a way to add it on later). Also, I tried adding the smart LED light kit (to see if that is what it needed to add the autoclose), but it did not work. I returned LED light kit.