Kramer Electronics VP-23N VP-23N is a 4x1 composite video, a 4x1 s-Video (Y/C) and 4x1 computer graphics video switcher, each with balanced stereo audio. It is designed for a wide variety of presentation and multimedia applications. Paired Receivers: PT-120, TP-105, TP-120, VP-5R. High Bandwidth - 350MHz (-3dB) computer graphics video, 385MHz s-Video (Y), 650MHz (-3dB) composite video, and 158MHz (-3dB) CAT 5. Computer Graphics Outputs - HD-15 and CAT 5 up to 100 Meters (>300). HDTV Compatible. Audio Level Controls for Each Output. Microphone Input Level Control. Built-in 5 Watt RMS per Channel Audio Amplifier with Speaker Output connectors. Master Audio Output - Input selectable. Talk Over Button Microphone input signal mutes the line Audio output when a microphone detects sound. Flexible Control Options - Front panel, RS-485, RS-232 (included K-Router Windows-based software), Ethernet, and IR remote (included). Front Panel Lockout. Worldwide Power Supply - 100-240V AC. Standard 19 Rack Mount Size - 2U