The N4450-XX from ARRA Inc. is a Fixed Attenuator with Frequency DC to 4 GHz, Attenuation 1 to 40 dB, Power 50 W, Peak Power 5 kW, Attenuation Accuracy ±0.3 dB ( 1 to 6 dB ), ±0.5 dB ( 7 to 20 dB ), ±1 dB ( 21 to 40 dB ). Tags: Module with Connectors. More details for N4450-XX can be seen below.