High-Performance 4K Transmission – Supports 4K resolution, SFP, HDMI 2.0, HDCP 1.4/2.2, RS-232 pass-through, and IR passback (20~60kHz) for seamless operation. Includes 3.5mm audio input for sound embedding and firmware upgradeable via Micro USB. Transmitter & Receiver Set with Dual Voltage Power Supply – Long-range transmission up to 40KM over fiber optic cable with low-latency performance over 1G IP networks. The device comes with a dual-voltage supply using a US plug, and an adapter/converter is provided for international use. Audio & Control Features – HDMI and analog stereo L/R audio output at the receiver for connecting to sound systems. IR control enables source devices to recognize remote commands from the display. Built-in ESD protection ensures safe and reliable operation. Rugged & Compact Commercial Design – Ideal professional distribution solution for 4K Blu-ray players, game consoles, media players, satellite receivers, PCs, laptops, cable boxes, and other HDMI sources. Heavy-duty metal enclosure aids in heat dissipation while maintaining a compact form factor for easy plug-and-play installation. Full HDCP compliant. Complete Professional OREI Package – Full OREI SUPPORT with 1-year warranty. Package includes 1x Transmitter, 1x Receiver, 2x DC5V/2A Power Adapters, 1x IR receiver cable, 1x IR blaster extension cable, 4x mounting ears, 2x grounding screws, 2x terminal blocks (RS-232), 1x SFP optical module (T1310nm/R1550nm), 1x SFP optical module (T1550nm/R1310nm), 10x screws, and instruction manual.