Operating the unit from another room (remote connection)
You can operate the unit or external devices from another room (a zone) using the remote control supplied with each device if you connect an infrared signal receiver/emitter to the unit’s REMOTE IN/OUT jacks.
An infrared signal transmitter is not required if you are using Yamaha products that support remote connections, as the unit does. You can transmit remote control signals by connecting the REMOTE IN/OUT jacks with monaural mini-jack cables and an infrared signal receiver.