Extends HDMI ARC or optical S/PDIF audio up to 150m/492ft over a single CAT5e/6/7 cable — no signal repeaters or dedicated audio cabling required Selectable input at transmitter — switch between HDMI ARC and optical S/PDIF to accommodate ARC-capable displays and legacy sources in the same kit High-resolution audio support up to 192kHz — 150m reach at 96kHz, 90m/295ft at 192kHz for installations requiring extended sample rates CEC pass-through in ARC mode — TV remote volume control is preserved end-to-end without additional control infrastructure Supports PCM 2.0, Dolby Digital 5.1, and DTS 5.1 — compatible with standard surround formats used in commercial and residential AV systems Metal-housed TX and RX units with ESD protection (±8kV air-gap / ±4kV contact) — built for installation in ceiling spaces, wall cavities, and AV racks Plug-and-play operation — no drivers or software required; 5V Micro USB power on both units