I like the devices, installation is straightforward, the hand holding by the app is very good. I have had just 1 of 6 fail I can't speak to the warranty service because with covid I got distracted & forgot to do anything about it so I just have a dead one. The real problem & why a 2 star review is lack of widgets to OPEN doors! I want to replace my garage door opener! Why do I have to buy a competitor to do it?