The CRT-40 series-Failsafe from Teledyne Relays is a RF Switch with Frequency DC to 40 GHz, Insertion Loss 0.2 to 0.7 dB, Isolation 60 to 80 dB, Supply Voltage 0 to 5.5 V, Actuator Voltage 12 to 28 V. Tags: Module with Connectors, Electro-Mechanical. More details for CRT-40 series-Failsafe can be seen below.