The Kramer 4x1VB is a high-quality 4x1 mechanical switcher designed for composite video signals using BNC connectors. It accepts up to four inputs and let's you select any input to be routed to one output using the buttons located on the front panel. High-quality switching components ensure minimal crosstalk and a high bandwidth of 400MHz (-3dB).
The entirely passive design of the 4x1VB eliminates the need for a power supply. Unselected inputs are automatically terminated into a 75Ω resistor.