The T1ZA1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.2 to 1.4 GHz, Average Power 200 W, Average Power Forward 200 W, Peak Power 1 kW, Insertion Loss 0.4 dB. Tags: Drop-In, Drop-In Isolator. More details for T1ZA1 can be seen below.