The QVA-2000-4000-64-S from Qualwave is a RF Variable Attenuator with Frequency 2 to 4 GHz, Attenuation Range 0 to 64 dB, Power 1 W, Insertion Loss 1.5 dB, Supply Voltage 0 to 10 V. Tags: Module with Connectors, Voltage Controlled. More details for QVA-2000-4000-64-S can be seen below.