The 800-F201 from RH Laboratories is a RF Variable Attenuator with Frequency 4 to 18 GHz, Attenuation Step 1 dB, Attenuation Accuracy ±1.5 dB (Flatness), Power 0.5 W, Insertion Loss 10 dB. Tags: Module with Connectors, Digital. More details for 800-F201 can be seen below.