The Extron MSW 4V rs is a four input composite video switcher with two parallel outputs on BNC connectors. Dual outputs provide for viewing on two separate displays or the ability to record and view video simultaneously. To ensure glitch-free transitions, the MSW 4V rs switches during the vertical interval of whichever signal is present on input one. Multiple control options are available, including auto-input switching, RS-232, contact closure, and front panel input selection buttons with LED indicators. The MSW 4V rs is housed in a 1U, quarter rack width metal enclosure and includes an external, universal power supply.