The Evolution by Vanco EVEXFBR1 HDMI Extender with bi-directional IR and RS-232, extends 4K HDR video and audio signals up to 984ft/300M over multi-mode fiber optic cables, and 6.2mi/10km over single mode fiber optic cables and modules! Bi-directional IR pass-through allows for source and/or display control. Also features RS-232 pass-through for additional control. For extending HDMI with 4K HDR resolution at an extreme distance, the EVEXFBR1 is a great solution for any application. The EVEXFBR1 includes two units: transmitting unit (EVEXFBR1-TX) and receiving unit (EVEXFBR1-RX). The transmitting unit is used to capture the HDMI input with control signals and carries the signals via fiber optic cables. The receiving unit is responsible for equalizing the transmitted HDMI signal and reconstructing IR signals. Both units require power.