The 354-340-XXX from Broadwave Technologies is a Fixed Attenuator with Frequency DC to 4 GHz, Attenuation 1 to 40 dB, Power 30 W, Peak Power 1 kW, Attenuation Accuracy ±0.5 dB, ±1 dB. Tags: Module with Connectors. More details for 354-340-XXX can be seen below.