The 50PA-133-XX from JFW Industries is a RF Variable Attenuator with Frequency 200 MHz to 6 GHz, Attenuation Range 63.5 dB, Attenuation Accuracy 0.25 to 1 dB, Power 0.5 to 2 W, Insertion Loss 2.6 to 6.5 dB. Tags: Rackmount, Programmable, Multi-Channel, System, Digital, Computer Controlled. More details for 50PA-133-XX can be seen below.