The K2-4-L/28P from MCLI is a RF Switch with Frequency DC to 6 GHz, Insertion Loss 0.30 dB, Supply Voltage 28 V, Supply Current 100 mA, Actuator Voltage 28 Vdc. Tags: Module with Connectors, Electro-Mechanical. More details for K2-4-L/28P can be seen below.