The AE-E000-40D from UMCC is a RF Variable Attenuator with Frequency 3 to 9 GHz, Attenuation Range 0 to 40 dB, Attenuation Step 0.25 dB, Power 1 W, P1dB 30 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for AE-E000-40D can be seen below.