The MDC005010R30B4 from Meuro Microwave is a RF Variable Attenuator with Frequency 500 MHz to 1GHz, Attenuation Range 0 to 30 dB, Attenuation Accuracy 1 dB, Power 0.5 W, Insertion Loss 2 dB. Tags: Module with Connectors, Drop In, Digital. More details for MDC005010R30B4 can be seen below.