The QDAT6-2-4-31.5 from Qualink Microwave is a RF Variable Attenuator with Frequency 2 to 4 GHz, Attenuation Range 31.5 dB, Attenuation Step 0.5 dB, Attenuation Accuracy 0.5 dB, Insertion Loss 4 dB. Tags: Module with Connectors, Digital. More details for QDAT6-2-4-31.5 can be seen below.