The 500-F206 from RH Laboratories is a RF Variable Attenuator with Frequency 2 to 6 GHz, Attenuation Accuracy ±0.5 dB (Flatness), Power 0 dBm, Insertion Loss 2.5 dB, Switching Time 1.25 us. Tags: Module with Connectors, Voltage Controlled. More details for 500-F206 can be seen below.