The Eye with Y Kit allows you to have two inputs for Hot Link Pro from 2 rooms. Perhaps you have 2 rooms that are adjacent. Just use one Eye in each room with one coax cable traveling through to the next room. The second Eye can also be used to receive IR Signals from another IR output device like a whole house controller.
If your secondary Location is not adjacent but is within 25 feet simply add a Mini Coax Eye Extension Cable with an Eye with Y Kit to place a secondary Receiver Eye in a location within 28 feet of the Hot Link Pro. Using Coax Cables will reduce the sensitivity of the remote-to-eye distance to about 28 feet.