The PA-124 from RLC Electronics is a RF Variable Attenuator with Frequency DC to 12.4 GHz, Attenuation Range 0-15 dB, Attenuation Step 1 dB, Attenuation Accuracy .5 dB, Power 1 W. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for PA-124 can be seen below.