The T3ZH3 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 3.45 to 3.55 GHz, Average Power 20 W, Average Power Forward 20 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T3ZH3 can be seen below.