The QDA-10-18000-31.5-0.5 from Qualwave is a RF Variable Attenuator with Frequency 0.01 to 18 GHz, Attenuation Range 0 to 31.5 dB, Attenuation Accuracy ±0.8 to ±1 dB, Power 0.31 W, Insertion Loss 5.5 dB. Tags: Module with Connectors, Digital. More details for QDA-10-18000-31.5-0.5 can be seen below.