The M8 Series from Charter Engineering is a RF Switch with Frequency 2 to 18 GHz, Insertion Loss 0.2 to 0.4 dB, Isolation 60 to 90 dB, Actuator Voltage 12 V, 15 V, 24 V, 28 V. Tags: Module with Connectors, Electro-Mechanical. More details for M8 Series can be seen below.