The 4204-95.5 from APITech is a RF Variable Attenuator with Frequency 35 MHz to 3 GHz, Attenuation Range 0 to 95.5 dB, Attenuation Step 0.5 dB, Attenuation Accuracy +/- 1 to +/- 1.3 dB, Power 0.63 W. Tags: Module with Connectors, Programmable. More details for 4204-95.5 can be seen below.