The 50P-0542 from JFW Industries is a RF Variable Attenuator with Frequency DC to 2.8 GHz, Attenuation Range 10 dB, Attenuation Step 1 dB, Power 2 W, Insertion Loss 3 dB. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 50P-0542 can be seen below.