The ZCI12S-8-18-30A from ZTS Technologies is a RF & Microwave Isolator with Frequency 8 to 18 GHz, Average Power Forward 30 W, Insertion Loss 1.2 dB, Isolation 12 dB, Operating Temperature 10 to 60 Degree C. Tags: Coaxial Isolator. More details for ZCI12S-8-18-30A can be seen below.