The 4401-8-95/75 from Spectrum Control is a RF Variable Attenuator with Frequency 300 kHz to 8 GHz, Attenuation Range 0 to 95.75 dB, Attenuation Step 0.5, Attenuation Accuracy ±0.1 to ±2.5 dB, Power 0.63 to 1.25 W. Tags: Module with Connectors, Programmable, Computer Controlled, USB Controlled, Multi-Channel. More details for 4401-8-95/75 can be seen below.