IR to RF/IR Base Station with included IR flashers No need for line-of-sight IR control Enables 2-way communication with RC7000CI and select Denon products RF and IR Addressable Multi-room operation is possible by adding extra RC-7000CI and RC-7001RCI Adding RC-7001RCI can extend the distance of RF communication. Up to 16 RC-7001RCI and RC-7000CI can be used Simple application for small to middle installations Low cost installation - no wiring for each zone control The Denon product must support 2-way communication (08 series AVR & new S series with RS-232)