The TWGKTS-FD Serial from Techniwave is a RF Variable Attenuator with Frequency DC to 3 GHz, Attenuation Range 127 dB, Attenuation Step 1 dB, Power 2 W, Insertion Loss 4.5 dB. Tags: Module with Connectors, Programmable. More details for TWGKTS-FD Serial can be seen below.