The T1XD12 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.8 to 2.2 GHz, Average Power 100 W, Average Power Forward 100 W, Peak Power 250 W, Insertion Loss 0.5 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1XD12 can be seen below.