The HSWM2801/2.9-176 from Renaissance Electronics Corporation is a RF Switch with Frequency 26.5 to 40.0 GHz, Insertion Loss 2.8 dB, Isolation 35 dB, Power 20 to 23 dBm, Power 0.1 to 0.2 W. Tags: Module with Connectors, Solid State. More details for HSWM2801/2.9-176 can be seen below.