The MDA005020-50E from Fujian MIcable is a RF Variable Attenuator with Frequency 0.5 to 2 GHz, Attenuation Range 50 dB, Attenuation Step 0.1 dB, Attenuation Accuracy ±0.1 to 0.2 dB, Insertion Loss 2 to 2.5 dB. Tags: Module with Connectors, Programmable. More details for MDA005020-50E can be seen below.