The T4XG2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 4.4 to 4.8 GHz, Average Power 2 W, Average Power Forward 2 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T4XG2 can be seen below.