The ZCI18S-2-4-100A from ZTS Technologies is a RF & Microwave Isolator with Frequency 2 to 4 GHz, Average Power Forward 100 W, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature 10 to 60 Degree C. Tags: Coaxial Isolator. More details for ZCI18S-2-4-100A can be seen below.