The 4512K from Anritsu is a RF Variable Attenuator with Frequency DC to 26.5 GHz, Attenuation Range 0 to 70 dB, Attenuation Accuracy 0.3 to 0.7 dB, Power 1 W, Peak Power 50 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 4512K can be seen below.