The AS-H500-31S from UMCC is a RF Variable Attenuator with Frequency 1 to 6 GHz, Attenuation Range 0 to 31 dB, Attenuation Step 1 dB, Power 0.5 W, P1dB 27 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for AS-H500-31S can be seen below.