The 994-037541-003 from M2 Global Technology is a RF & Microwave Isolator with Frequency 960 MHz to 1.22 GHz, Average Power Reverse 10 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature 0 to 60 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for 994-037541-003 can be seen below.