Black Box 4x2 DVI Matrix Switch with Audio and RS-232 Control

Designed for digital signage and multi-screen environments, the Black Box 4x2 DVI Matrix Switch with Audio and RS-232 Control delivers reliable, plug-and-play source routing with professional-grade AV performance. This compact matrix aggregates four DVI inputs and two DVI outputs while simultaneously managing two-channel audio, enabling precise control over what content is displayed on each screen and when. Ideal for corporate lobbies, educational campuses, retail environments, and control rooms, it simplifies complex AV layouts by centralizing source management in a single, streamlined device. With flexible control options, you can switch sources from the front panel, via RS-232 from a PC, or integrate the switch into an automated AV workflow for seamless signage playback and presentation setups.

• Flexible routing for four DVI inputs to two DVI outputs with synchronized audio. This setup lets you independently route any source to any display, or mirror content across both screens, making it perfect for multi-zone signage and comparison displays in surveillance or control centers.
• Dedicated stereo audio switching to ensure audio remains synchronized with video. Route two-channel audio from any selected input to the paired speakers or amplifiers, preserving audio clarity and reducing setup time in venues where clear messaging is essential.
• Multiple control options for effortless operation. Use front-panel buttons for quick, local switching, or connect a PC via RS-232 to automate source changes, schedule playbacks, or integrate with control systems and signage software for hands-free operation.
• Rugged, space-efficient design tailored for professional AV environments. Built to sit neatly in a rack or on a shelf, the switch minimizes footprint while delivering dependable performance for commercial deployments, events, and educational labs.
• Designed with digital signage in mind. This matrix switch enables smooth content management across two displays, enabling dynamic message rotation, synchronized promotions, and consistent branding across multiple screens without manual reconfiguration for each source change.

Technical Details of Black Box 4x2 DVI Matrix Switch with Audio and RS-232 Control

• Matrix size: 4 inputs × 2 outputs
• DVI inputs: 4
• DVI outputs: 2
• Audio: 2-channel stereo routing for accompanying speech, music, or multimedia audio
• Control: RS-232 interface for PC or automation system integration
• Local control: Front-panel buttons for quick source switching
• Applications: Ideal for digital signage display systems, classrooms, conference rooms, and multi-screen installations

How to Install Black Box 4x2 DVI Matrix Switch with Audio and RS-232 Control

• Power down all equipment before installation. Unpack the matrix switch and verify that all required cables are available for DVI and audio connections, as well as RS-232 control wiring if you plan to automate switching.
• Connect your four DVI sources to the four DVI input ports on the switch using appropriate DVI-D cables. Ensure each source is powered off during connection to prevent transient signals.
• Connect the two DVI displays to the two DVI output ports. Use high-quality cables to preserve video integrity, especially for high-resolution content.
• Attach the stereo audio sources to the corresponding audio inputs, and connect the two speaker/monitor audio outputs to your audio system or speakers. Confirm that the audio routing aligns with the desired display-to-audio configuration.
• Connect the RS-232 control line to a PC or central control system if you plan to automate switching. Verify baud rate, parity, and other settings as specified by your control software or operator manual.
• Provide power to the matrix switch and power on the connected sources. Use the front-panel controls to test basic switching, then verify that the displays show the correct video and that the audio follows the selected input.
• If integrating with a control system, implement the RS-232 commands or scripts to automate input changes, and schedule source selection according to your signage or presentation workflow.

Frequently asked questions

• Q: What resolutions does the Black Box 4x2 DVI Matrix Switch support?
  A: The switch is designed to handle standard DVI video resolutions typical for professional signage and computing setups. It supports common high-definition formats up to 1080p, with compatibility for higher resolutions depending on the capabilities of the connected DVI sources and displays.
• Q: Can I control the switch remotely via RS-232?
  A: Yes. The RS-232 interface enables remote control and automation from a PC or compatible control system, allowing scripted input changes, automation sequences, and integration with signage management software.
• Q: Is audio switched along with video?
  A: Yes. The device routes 2-channel stereo audio together with the selected video input, ensuring audio remains synchronized with the corresponding video output for each display.
• Q: What are the most common use cases for this matrix switch?
  A: It is ideal for digital signage deployments, multi-screen displays in lobbies or control rooms, classroom or conference room AV setups, and any environment where you need to switch between multiple sources across two displays while maintaining audio coherence.
• Q: How do I switch inputs?
  A: You can switch inputs via the front-panel buttons for quick local control, or by sending RS-232 commands from a connected PC or control system for automated or scheduled switching. This gives you flexible control matching your workflow.