The TWGKTS2-2-11-4.3-A2 from Techniwave is a RF Variable Attenuator with Frequency DC to 4.3 GHz, Attenuation Range 0 to 11 dB, Attenuation Step 0.1 dB, Power 2 W, Insertion Loss 1.5 dB. Tags: Module with Connectors, Rotary. More details for TWGKTS2-2-11-4.3-A2 can be seen below.