The SS 2.1 MLR/BNC is a transparent two input, dual output switcher/router with mechanical latching relays and BNC connectors. The SS 2.1 MLR/BNC is perfect for all types of passive signal switching via front panel switches, contact closures and/or serial RS-232. The switching is accomplished with mechanical latching gold contact relays, which means that the unit can route a signal in either direction. Due to the passive nature of the switching, any input level and impedance can be used. Inputs may be balanced or unbalanced, while output levels, impedance, distortion, noise and balancing will match that of the selected input. The SS 2.1 MLR/BNC can be controlled and monitored locally and/or with simple contact closures to ground, as well with multi-drop RS-232 serial commands.