The SJ-ST-2000-8000-30-10 from A-Info is a RF Variable Attenuator with Frequency 2 to 8 GHz, Attenuation Range 30 dB, Attenuation Step 10 dB, Attenuation Accuracy ±1.5 dB, Power 1 W. Tags: Module with Connectors, Digital. More details for SJ-ST-2000-8000-30-10 can be seen below.