The SATPXX-8-90-4-B from Sainty-Tech Communications Limited is a RF Variable Attenuator with Frequency DC to 4 GHz, Attenuation Range 0 to 90 dB, Attenuation Step 1 dB, 2 dB, 4 dB, 8 dB, 16 dB, 20 dB, Attenuation Accuracy ±1.2 to 4.5 dB, Power 2 W, 5 W, 10 W. Tags: Module with Connectors, Pushbutton. More details for SATPXX-8-90-4-B can be seen below.