The S4R1840-50T100 from Clear Microwave, Inc is a RF Switch with Frequency 18 to 40 GHz, Insertion Loss 4.5 dB, Isolation 50 dB, Supply Voltage 5 V, Supply Current 240 mA. Tags: Module with Connectors, Solid State. More details for S4R1840-50T100 can be seen below.