The 03.02.500 from Hytem is a RF Variable Attenuator with Frequency 380 MHz to 3 GHz, Attenuation Range 93 dB, Attenuation Step 0.5 dB, Power 0.25 W, Insertion Loss 8 dB. Tags: Module with Connectors, Digital, USB Controlled. More details for 03.02.500 can be seen below.