The QCA10-2-18-40 from Qualwave is a RF Variable Attenuator with Frequency 2 to 18 GHz, Attenuation Range 0 to 40 dB, Power 10 W, Insertion Loss 1.2 dB, Operating Temperature -40 to 65 Degree C. Tags: Module with Connectors, Continuously Variable. More details for QCA10-2-18-40 can be seen below.