The AE-B000-40V from UMCC is a RF Variable Attenuator with Frequency 350 MHz to 1.1 GHz, Attenuation Range 0 to 40 dB, Power 1 W, P1dB 30 dBm, Insertion Loss 1.7 dB. Tags: Module with Connectors, Voltage Controlled. More details for AE-B000-40V can be seen below.