The UTF-015 from Teledyne Microwave Solutions is a RF Variable Attenuator with Frequency 5 to 1000 MHz, Attenuation Range 15 to 20 dB, Power 0.2 W, Insertion Loss 1.5 to 2.5 dB, Switching Time 0.5 ms. Tags: Module with Connectors, Drop In, Voltage Controlled. More details for UTF-015 can be seen below.