The AM004038S2WM-QN4-R from AMCOM Communications, Inc. is a RF Switch with Frequency DC to 4 GHz, Insertion Loss 1 to 1.3 dB, Isolation 35 to 55 dB, Power 36 to 39 dBm, Power 3.98 to 7.94 W. Tags: Surface Mount, Solid State. More details for AM004038S2WM-QN4-R can be seen below.