The CS-37S Series-Failsafe from Teledyne Relays is a RF Switch with Frequency DC to 18 GHz, Insertion Loss 0.2 to 0.5 dB, Isolation 60 to 70 dB, Supply Voltage 0 to 5.5 V, Actuator Voltage 12 to 28 V. Tags: Module with Connectors, Electro-Mechanical. More details for CS-37S Series-Failsafe can be seen below.