The IS-054059-BS from Spectrum Elektrotechnik GmbH is a RF & Microwave Isolator with Frequency 5.4 to 5.9 GHz, Average Power Forward 10 W, Average Power Reverse 2 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Coaxial Isolator. More details for IS-054059-BS can be seen below.