The T1CM2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.562 to 1.588 GHz, Average Power 0.1 W, Average Power Forward 0.1 W, Insertion Loss 0.5 dB, Isolation 40 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1CM2 can be seen below.