The BM10054 from Bracke Manufacturing is a RF Variable Attenuator with Frequency DC to 2.5 GHz, Attenuation Range 0 to 50 dB, Attenuation Accuracy ±0.2 to ±0.4 dB, Power 1 W, Peak Power 60 dBm. Tags: Benchtop, Rotary. More details for BM10054 can be seen below.