Epson EB-L30002U User Manual page 28

Part Names and Functions
a
 When the remote control cable is plugged into the Remote port, the
remote receiver on the projector is disabled.
 When the remote control cable is plugged into the remote port of
the remote control, the remote control indicator does not turn on.
 You can also connect the optional HDBaseT transmitter and remote
control with the cable to control the projector.
s "Connecting an HDBaseT Transmitter" p.54
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