The ANO 51-2001-01 from ANOISON Electronics LLC is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 1 dB, Power 20 W, Peak Power 300 W, Attenuation Accuracy -0.5 to 0.6 dB. Tags: Module with Connectors. More details for ANO 51-2001-01 can be seen below.