The SDA-400-030-0100-K from Fairview Microwave is a RF Variable Attenuator with Frequency 100 MHz to 40 GHz, Attenuation Range 0 to 30 dB, Attenuation Accuracy ±2.5 dB, Power 0.25 W, P1dB 20 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for SDA-400-030-0100-K can be seen below.