The IS-10 from MCLI is a RF & Microwave Isolator with Frequency 2 to 4.5 GHz, Average Power Forward 50 W, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature -30 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-10 can be seen below.