The H-37S Series from Teledyne Relays is a RF Switch with Frequency DC to 18 GHz, Insertion Loss 0.15 to 0.65 dB, Isolation 60 to 80 dB, Actuator Voltage 28 V, Actuator Current 90 mA. Tags: Module with Connectors, Through Hole, Electro-Mechanical. More details for H-37S Series can be seen below.