The TWGKTS2-50-4-E from Techniwave is a RF Variable Attenuator with Frequency 0.5 to 4 GHz, Attenuation Range 0 to 20 dB, Power 2 W, Insertion Loss 0.5 dB. Tags: Module with Connectors, Continuously Variable. More details for TWGKTS2-50-4-E can be seen below.