The 994-037856-001 from M2 Global Technology is a RF & Microwave Isolator with Frequency 7.1 to 8.5 GHz, Average Power Reverse 10 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -20 to 55 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for 994-037856-001 can be seen below.