The D4I2040 from DiTom Microwave is a RF & Microwave Isolator with Frequency 2 to 4 GHz, Average Power 20 W, Average Power Forward 20 W, Average Power Reverse 2 W, Peak Power Forward 0.02 kW. Tags: Module with Connector, Coaxial Isolator. More details for D4I2040 can be seen below.