The QDAT5-1-40-31 from Qualink Microwave is a RF Variable Attenuator with Frequency 1 to 40 GHz, Attenuation Range 31 dB, Attenuation Step 1 dB, Attenuation Accuracy 2 dB, Insertion Loss 9.0 dB. Tags: Module with Connectors, Digital. More details for QDAT5-1-40-31 can be seen below.