The BM10059.4 from Bracke Manufacturing is a Fixed Attenuator with Frequency DC to 26.5 GHz, Attenuation 4 dB, Power 2 W, Attenuation Accuracy ±0.5 dB, Operating Temperature -65 to 125 Degree C. Tags: Module with Connectors. More details for BM10059.4 can be seen below.