The Atlona AT-UHD-EX-100CE-TX is a transmitter unit within Atlona's HDBaseT extension ecosystem, designed to transmit ultra-high-definition 4K/UHD video, audio, and control signals over a single standard CAT6a/7 network cable for distances up to 100 meters. This device serves as the source-end component, accepting an HDMI 2.0 input from a 4K source—such as a media player, computer, or game console—and converting it into the HDBaseT signal format for long-distance transmission. The "CE" designation often indicates Commercial Edition, featuring robust construction and advanced control capabilities suitable for professional installations in corporate, education, healthcare, and hospitality environments. By leveraging the HDBaseT standard, it consolidates video, audio, Ethernet, IR control, and RS-232 serial commands onto one cable, dramatically simplifying installation and reducing cable clutter compared to traditional HDMI extension solutions which are limited to short distances.

The transmitter supports high-bandwidth 4K/UHD content at 60Hz with 4:4:4 chroma sampling, ensuring no loss in visual fidelity for detailed graphics and fast-motion video. It incorporates HDCP 2.2 compliance for protected content playback and supports high dynamic range (HDR) formats, including HDR10. For system integration, the unit offers two-way RS-232 and IR pass-through, allowing centralized control systems to manage both the transmitter and the source device from the display location. It is typically powered via Power over HDBaseT (PoH), receiving power from the compatible receiver unit over the same network cable, eliminating the need for a local power outlet at the source. Housed in a compact, discreet enclosure, the AT-UHD-EX-100CE-TX is designed for reliable performance in permanent installations, providing a future-proofed solution for distributing uncompromised 4K AV signals throughout a building.