The F2112 from WENTEQ Microwave Corp is a RF & Microwave Isolator with Frequency 2 to 4 GHz, Bandwidth 2000MHz, Average Power Forward 5 W, Average Power Reverse 3 W, Insertion Loss 0.5 dB. Tags: Module with Connector, Coaxial Isolator. More details for F2112 can be seen below.