The ANO 29-4001-40 from ANOISON Electronics LLC is a Fixed Attenuator with Frequency DC to 40 GHz, Attenuation 40 dB, Power 40 W, Peak Power 500 W, Attenuation Accuracy -1 to 1.5 dB. Tags: Module with Connectors. More details for ANO 29-4001-40 can be seen below.