The GRS6012 from Teledyne Microwave Solutions is a RF Variable Attenuator with Frequency 3 MHz to 6 GHz, Attenuation Range 18 to 20 dB, Power 1 W, P1dB 30 dBm, Insertion Loss 2.0 to 4.5 dB. Tags: Surface Mount, Module with Connectors, Voltage Controlled. More details for GRS6012 can be seen below.