The DJS0540-1XX from Sierra Microwave Technology is a RF Switch with Frequency 500 MHz to 4 GHz, Insertion Loss 1.5 to 4 dB, Isolation 60 dB, Supply Voltage 28 V, Switching Speed 100 nS. Tags: Module with Connectors, Solid State. More details for DJS0540-1XX can be seen below.