Kramer Electronics VP-23RC VP-23RC is a 4x1 composite video, a 4x1 s-Video (Y/C) and 4x1 computer graphics video switcher, each with balanced stereo audio. It will control audio components, video components and other room facilities such as lights and screens. 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 CAT 5 up to UXGA. Computer Graphics Outputs - CAT 5 up to 100m (>300‘) and 15-pin HD HD connectors. HDTV Compatible. Audio Level Controls for Each Output. Microphone Input Level Control. Built-in Audio Amplifier – 5 Watt RMS per channel 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 (room, audio and video), 1xRS-485, 2xRS-232 (K-Router Windows-based software is included), 1xEthernet, 4xRelays, 3xIR emitters, and IR remote control unit included). Front Panel Lockout. Worldwide Power Supply - 90-240V AC. Standard 19inch Rack Mount Size - 2U.