HDMI Switcher Kramer Electronics VS-21DT

The Kramer Electronics VS-21DT is a high-performance 2x1 automatic switcher designed for professional AV environments. It supports 4K Ultra HD video signals, ensuring compatibility with modern display standards. By utilizing HDBaseT 1.0 technology, this device functions as a transmitter, allowing for reliable signal distribution over distances up to 40 meters. The unit features intelligent switching logic, including priority and last-connected modes, which automatically detect active video signals to provide a seamless viewing experience.

Advantages

This switcher offers exceptional signal integrity through Kramer's proprietary equalization and re-clocking technology, which maintains high data rates of up to 8.91 Gbps. Its compact form factor allows for discreet installation in tight spaces, such as behind displays or under conference tables. The device is fully HDCP 2.2 compliant, ensuring secure and stable transmission of protected content. With support for 3D pass-through and HDTV compatibility, it integrates effortlessly into diverse multimedia setups.

Suitable for

• Conference rooms and boardrooms
• Educational facilities and classrooms
• Digital signage installations
• Home theater systems requiring long-distance signal extension

This device may not be suitable for applications requiring resolutions higher than 4K at 60Hz with 4:2:0 chroma subsampling. It is also not intended for use as a multi-input matrix switcher, as it is strictly a 2x1 configuration.

Key specifications

• Maximum data rate: 8.91 Gbps
• Resolution support: Up to 4K at 60Hz (4:2:0)
• Transmission range: Up to 40 meters
• Compliance: HDCP 2.2
• Power requirements: 5V DC, 1000 mA
• Dimensions: 120 mm x 71.5 mm x 24.4 mm

How to use

To set up the Kramer VS-21DT, connect your HDMI source devices to the input ports. Connect the HDBaseT output to a compatible receiver using a high-quality category cable. Ensure the device is powered using the provided 5V AC adapter. Once powered, the switcher will automatically detect active signals based on the configured priority or last-connected settings. No manual intervention is typically required during standard operation.

What to consider before purchase

• Verify that your receiver unit is compatible with HDBaseT 1.0 standards.
• Ensure the cabling used supports the required bandwidth for 4K transmission.
• Confirm that the 40-meter range is sufficient for your specific installation layout.
• Check that your source devices and displays are compatible with HDCP 2.2.

Usage recommendations

For optimal performance, use high-quality shielded twisted-pair cables to maintain signal integrity over the full 40-meter distance. Ensure the device is placed in a well-ventilated area to prevent overheating during extended operation.