The Crestron HD-TX-201-C-2G-E-B-T is a multi-function transmitter and switcher unit designed to extend and switch high-definition audio/video signals in professional AV installations. This device serves a dual purpose: it acts as an HDMI transmitter for sending audio and video over a single CATx cable (Category 5e/6/6a) to a compatible receiver up to 330 feet away, and it incorporates a 2x1 switcher to select between two local sources before transmission. This integrated functionality consolidates equipment, simplifying system design for conference rooms, classrooms, and digital signage applications where multiple local sources (like a laptop and an installed PC) need to be managed and sent to a remote display.

The transmitter accepts two primary inputs: an HDMI input and a VGA input with associated stereo analog audio (via 3.5mm jack). The integrated switcher allows the user or control system to select which of these two sources is active and sent over the CATx link. The HDMI signal, along with embedded audio, and the VGA video with its separate audio, are all encoded and transmitted digitally over the single CATx cable using Crestron's DigitalMedia technology, ensuring high-fidelity, uncompressed delivery of video resolutions up to 1920x1200 and 1080p. The unit also features two bidirectional RS-232 serial ports and an IR output, allowing for remote control of source devices (like a laptop or DVD player) from the display location, which is a critical feature for integrated room systems.

This model is part of Crestron's "2G" platform, indicating second-generation performance with support for higher bandwidth. The "E" suffix typically denotes an "Enterprise" model with enhanced features like EDID management and system diagnostics. The unit is powered via Power over Ethernet (PoE) from the connected receiver or a separate injector, reducing cable clutter. For AV integrators, this all-in-one transmitter/switcher provides a streamlined, reliable solution for managing local sources and extending them over long distances with full control pass-back, reducing the number of required boxes and simplifying installation and troubleshooting.