The 75S-381 from JFW Industries is a RF Switch with Frequency DC to 2150 MHz, Insertion Loss 0.40 to 1.00 dB, Isolation 55 to 80 dB, Power 20 dBm, Power 0.1 W. Tags: Module with Connectors, Electro-Mechanical. More details for 75S-381 can be seen below.