[olguy]

Mdrew,

The IR sensor is on the front panel. There are three clear plastic lenses. Those the IR receivers.

Now with that said all after market remotes only work using remote address #1. If you have set your receiver and Dish remote to another remote address then no aftermarket remote will work.

John

Not true. I have a 311 that I set on remote address 3. When I was setting up my Logitech Harmony 659 do-all, I called their tech support and the tech support guy added the address to the 311 data base for my remote. So I would say that some universal remotes will only use address 1 while some will use other addresses.