The ECS-37K series from Teledyne Relays is a RF Switch with Frequency DC to 40 GHz, Insertion Loss 0.25 to 1 dB, Isolation 50 to 75 dB, Actuator Voltage 12 to 24 V, Actuator Current 300 mA. Tags: Module with Connectors, Electro-Mechanical. More details for ECS-37K series can be seen below.