The E5XA1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 5.8 to 18.4 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 1.5 dB, Isolation 15 dB. Tags: Module with Connectors, Coaxial Isolator. More details for E5XA1 can be seen below.