When you install this device, you have to disconnect your outside antenna from your TV and connect it to this. It is also connected to your ethernet cable and to power. Next you have to down load the HD Homerun app on any of your network connected devices that you want to watch your local channels on. Install it on your computer and run the app. It will scan for local channels and finish the set up of your HD Homerun device. You can also install the app on Apple TV, Android boxes such as Nvidia shield, etc. That will allow you to watch your channels on them. For example, I have HD Homerun app on my desktop, Iphone 8, Apple TV and Nvidia shield. One note,,, this will not record, that is a service that is offered in the app for $35 / yr. but is not required if you just want to view.