The 353-009-XXX from Broadwave Technologies is a Fixed Attenuator with Frequency DC to 6 GHz, Attenuation 1 to 40 dB, Power 5 W, Peak Power 1 kW, Attenuation Accuracy ±0.3 dB, ±0.5 dB. Tags: Module with Connectors. More details for 353-009-XXX can be seen below.