The 500-F208 from RH Laboratories is a RF Variable Attenuator with Frequency 5 to 10 GHz, Attenuation Accuracy ±0.8 to ±1.6 dB (Flatness), Power 10 mW, Insertion Loss 2.5 dB, Switching Time 1 us (Response). Tags: Module with Connectors, Voltage Controlled. More details for 500-F208 can be seen below.