The RSWM-4X8SR from Becker Nachrichtentechnik GmbH is a Switch Matrix with Frequency 1.7 to 30 MHz, Power 25 dBm, Voltage 90 to 260 VAC, Isolation -70 dB (Channel Isolation), -27 dB (Output Isolation). Tags: Rack Mount. More details for RSWM-4X8SR can be seen below.