The MPAT-03800410 from Narda-MITEQ is a RF Variable Attenuator with Frequency 3.8 to 4.1 GHz, Attenuation Range 10 to 60 dB, Insertion Loss 1.3 dB, Supply Voltage 0 to 5 V. Tags: Module with Connectors, Voltage Controlled. More details for MPAT-03800410 can be seen below.