Epson 5020UB - Manual (Page 63)

Using WirelessHD
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Note: Make sure to point the remote at the WirelessHD transmitter.
The sub-screen menu is displayed:
2. Press the Input button repeatedly to highlight different input sources.
When you have highlighted the source you want to switch to, stop pressing the Input button.
The display will automatically switch to the selected source after a few seconds.