The T2YG4 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.9 to 2 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 0.3 dB, Isolation 25 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T2YG4 can be seen below.