The 03.02.911 from Hytem is a RF Variable Attenuator with Frequency 50 to 8000 MHz, Attenuation Range 93.75 dB, Attenuation Step 0.25 dB, Power 24 to 33 dBm, Insertion Loss 11.7 dB. Tags: Module with Connectors, USB Controlled. More details for 03.02.911 can be seen below.