Although it's still early days I'm very impressed and the alarm system seems excellent. On the initial install, I hit an issue whilst trying to pair a couple of the sensors as I didn't pull the battery tape quickly enough, but after looking at the support pages I discovered how to reset the sensors (press the tamper switch a few times) and then the sensors paired easily. I opted for the cellular option for the central hub and occasionally Wi-Fi connection has been lost and the hub connects to cellular, but seems to re-establish the connection to Wi-Fi very quickly. Alarming and disarming is easy using the key fob, but can be done directly from the hub or via the app. The app itself is easy to use and the notifications are all configurable. I'm definitely happy with my choice.