The ZFAT-R512 from Mini Circuits is a RF Variable Attenuator with Frequency 10 MHz to 1 GHz, Attenuation Range 3.5 to 4 dB, Attenuation Step 0.5 to 2 dB, Power 0.03 W, P1dB 15 dBm. Tags: Module with Connectors, Programmable, Digital. More details for ZFAT-R512 can be seen below.