The ZX76-15R5-PN+ from Mini Circuits is a RF Variable Attenuator with Frequency DC to 4 GHz, Attenuation Range 15.5 dB, Attenuation Step 0.5 dB, Power 0.25 W, P1dB 24 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for ZX76-15R5-PN+ can be seen below.