Denon AVR-X1700H 7.2-Channel Network A/V Receiver with HEOS - Manual (Page 65)

Connecting an external control device
REMOTE CONTROL jacks
When this unit is installed in a location where the remote control signals cannot reach (installation in a cabinet etc.), it can still be controlled by the remote
control by connecting a remote control receiver unit (sold separately).
You can also use it to remotely control ZONE2 (another room).
.
AUX
OUT
Infrared
retransmitter
Infrared
sensor
Input Output
Contents Connections Playback Settings Tips Appendix
65
Front panel Display Rear panel Remote Index