The 58M3-30 from ARRA Inc. is a RF Variable Attenuator with Frequency 4 to 8 GHz, Attenuation Range 30 dB, Attenuation Accuracy ±2 dB, Power 5 W, Peak Power 64.77 dBm. Tags: Module with Connectors, Continuously Variable, Rotary, Motorized. More details for 58M3-30 can be seen below.