The BM10045 from Bracke Manufacturing is a RF Variable Attenuator with Frequency DC to 500 MHz, Attenuation Range 0 to 45.5 dB, Attenuation Step 0.5, 1, 2, 4, 8, 10, 20 dB, Attenuation Accuracy ±0.5 dB, Power 1 W. Tags: Module with Connectors, Toggle. More details for BM10045 can be seen below.