The 03.02.501 from Hytem is a RF Variable Attenuator with Frequency 380 MHz to 6 GHz, Attenuation Range 93 dB, Attenuation Step 0.5 dB, Power 0.25 W, Insertion Loss 12 dB. Tags: Module with Connectors, Digital, USB Controlled. More details for 03.02.501 can be seen below.