ScreenLogic is software, an app and a tiny little box that wires to your router (or ethernet switch) and your EasyTouch. You download the software for your computer, and/or the app for your phone, and tell it the number printed on the little box. The box plugs into your network via an ethernet cable. And attaches to your EasyTouch through either a four-conductor wire, or a set of wireless gizmos (transmitter and receiver). You can have this all installed by a contractor, or you can do this all yourself (which may or may not impact a warranty somewhere, you'll have to check on that). Once all that is installed, you then configure the software (either on a computer or phone). Sometimes its the configuring that is worth the extra cost of pro installation! But there are many here that know the system inside and out and can help you with that, if you want to take this on yourself. I believe ScreenLogic is sold in two versions, with and without the wireless gizmos, so you need to determine before you order if you can run wires between the box and your router and your EasyTouch, or if you have to rely on wireless.
I don't like wireless for anything, so hard-wired mine. My little box sits next to my LAN's switch. I ran a wire from there to my EasyTouch. I later added the wall remote I described earlier, and that wires up with the same four-wire cable. I actually first had it all installed by a contractor, who used the wireless gizmos, but later converted to hard-wire myself. The contractor reclaimed the wireless gizmos. I can't now remember if he paid me anything for those. Probably not, I didn't know any better.