The PE83IR1021 from Pasternack Enterprises Inc is a RF & Microwave Isolator with Frequency 7 to 12.4 GHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 1.2 dB, Isolation 40 dB. Tags: Module with Connector, Coaxial Isolator. More details for PE83IR1021 can be seen below.