The SJ-T-4080-50D from A-Info is a RF Variable Attenuator with Frequency 4 to 8 GHz, Attenuation Range 0 to 50 dB, Attenuation Accuracy ±2.3 to ±3.5 dB, Power 0.5 W, Insertion Loss 3.5 dB. Tags: Module with Connectors, Current Controlled, Voltage Controlled. More details for SJ-T-4080-50D can be seen below.