The 03.02.499 from Hytem is a RF Variable Attenuator with Frequency 80 MHz to 1 GHz, Attenuation Range 93 dB, Attenuation Step 0.5 dB, Power 0.25 W, Insertion Loss 6 dB. Tags: Module with Connectors, Digital, USB Controlled. More details for 03.02.499 can be seen below.