All the controllers have wifi access and once setup in your account and setup for wifi access will comunicate to the cloud which is on the Amazon servers. The alerts can be push notifications on the devices with the app installed or email. You can have them sent to both. You can also get it to send text if you use the email to text for your carrier. There are several different alerts from none, yellow, orange or red. The later is even audible at the controller so use that one wisely. I have a X3 in my collective. In the screenshot below from the app the controller named INP 1 42g is my X3. The inputs from it are 42g Temp, 42g pH and Skimmer Full. The other controllers here are also at the tank and are a XS for four more inputs and a XP8 which powers my heaters, cooling fans, return pump and skimmer pump. The other one here is a wave engine v2. It is also the wifi master for the collective and controls a couple of Ecotech MP10's. I have 5 other controllers in the collective vut they are in the garage. You can setup separate pages which I have done here. The one in the screenshot is the top part of the Hex Tank page. The outputs are down below the inputs but it all won't fit so it will show in the screenshot. The second screenshot is of a screen full of push notifications. It will repeat the notifications every 30 minutes the way I have it setup until the issue clears. As you can see I had to refill my All for Reef reservoir today. It was getting low. Once I did after the 30 minute timer it sends a alert condition no longer present. There is also a web app you can access from their website for use on a computer of from a web browser. I do use mine for control also, but even if you get the monitor package it still comes with a controller and all you would need is an output device such as the wifi strips or a controller with the type output device you need. They do have a wifi feeder that it can control since it is it's own output device.