Kramer Electronics SWT3-21-H 2x1 Automatic Switcher for 4K60 HDR HDMI with RS-232

The Kramer Electronics SWT3-21-H is a high-performance 2x1 automatic switcher for 4K60 HDR HDMI signals, featuring RS-232 control and contact closure. It supports resolutions up to 4K@60Hz (4:4:4) with 18Gbps data rate, HDCP 2.2, and HDR. The switcher offers automatic input switching based on last connected or priority, and includes K-Lock™ EDID protection for reliable operation. Its fan-less MegaTOOLS® enclosure ensures silent operation and easy mounting.

Advantages

Seamless automatic switching with zero latency, robust EDID management, and versatile control options including RS-232 and contact closure. Ideal for professional AV installations requiring reliable 4K HDR signal routing.

Suitable for

• Conference rooms and boardrooms
• Education and training facilities
• Digital signage and retail displays
• Home theater systems

Key specifications

• Inputs: 2x HDMI Female
• Outputs: 1x HDMI Female
• Max Resolution: 4K@60Hz (4:4:4)
• Data Rate: 18Gbps
• HDCP: HDCP 2.2
• HDR Support: Yes
• Deep Color: Up to 12-bit
• HDMI Version: 2.0
• Audio Support: LPCM 2-channel, Dolby Digital, DTS-HD Master Audio
• Control: Automatic (Last Connected/Priority), RS-232, Contact Closure
• EDID Management: K-Lock™ EDID Protection, Internal/External EDID
• Power Supply: 5V DC, 2A
• Enclosure: MegaTOOLS® Fan-less
• Mounting: Desktop, Rack Mount (with optional adapter)
• Compliance: CE, FCC

Recommendations

For optimal performance, use high-quality HDMI 2.0 cables. The optional rack mount adapter allows integration into standard 19-inch racks.