We have just finished installing the new Meross Collie HK controller for the garage door. These are my initial impressions. 1. Association was a problem. I don't remember having this problem with the Meross switches or their smart plugs, but it took me 20 minutes to pair them. 2. The controller uses a wired sensor. At first, this was very annoying for me, but I realized why when I connected it to the garage door opener. The unit is based on the same inputs used by the garage door wall controller. This allowed Meross not to worry so much about compatibility. 3. The sensor cable is heavier than I expected. I have secure running using band-based cable snaps, but I may need to get cable holders to make sure they stay. 4. The door sensor is magnetic, so you don't have to screw it onto a steel door. I attached it anyway using a control tape. 5. The unit can control up to three doors. In the Meross app you can hide the ones that are not used, but, as far as I know, you can't hide them in HK individually. Very annoying. 6. If you do not rename unused doors, HK will ask you which door you want to open. Again, annoying. I renamed my unused ports in DNU so I can fix this. On the other hand, if you have multiple doors, you can label them depending on which car you enter, which is nice. 7. I haven't tried the Carplay / door auto-trigger test yet, but I'll try tomorrow when I get home from the gym. 8. There is no default door closing alert, nor is there a delay in triggering the door closing. I come from MyQ, which applies a five-second alarm before triggering the door to close. 9. EDIT: Another thing I just realized is that now that the door is controlled by homekit, not shortcut, I need to have the screen unlocked for the door to open. This is a huge inconvenience as most of my units are to / from the gym, which is about 10 minutes away. In these cases, I rarely connect the phone to Carplay and I never had any problems opening the door. Now, with this new barrier, I'm seriously thinking about whether it will stay. Overall, the device was cheap, which is why I got it. Until today, I used the triggers I found in the subhomekit.blog of shortcuts and it worked well. This gives me the opportunity to check the condition of the door immediately and do more with Carplay to open or close automatically, but I have to test that. I also wonder if there is any way to use unused ports as dummy switches. I have a smart socket that I use to do an nfc based unlock, but that's a waste of a smart switch.