The C1AY1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.8 to 2 GHz, Average Power 2 W, Average Power Forward 2 W, Insertion Loss 0.4 dB, Isolation 18 dB. Tags: Module with Connectors, Coaxial Isolator. More details for C1AY1 can be seen below.