Features: 100% brand new and high quality The MC472 is a broadband 6-bit digital attenuator with an attenuation range of 0 to 31.5db A typical step size error of 0.25dB. It is packaged in a QFN surface mount and powered by a single power supply of 5V. The operating frequency range is from DC to 3.8 GHz. The insertion loss is lower than 2.0 dB (typ.) IIP3 is +54 dBm, suitable for various RF and IF applications. Package Includes: 1 PC x HMC472 Module Specifications: Operating frequency range: 1M3.8GHz; Input signal maximum power: 20dBm Attenuation multiple and step size: attenuation multiple is 031.5db, step size is 0.5db. Insertion loss: less than 2.0dB. Attenuation control interface: one is manual adjustment and control through the 6-bit pin header on the board; Input and output impedance: 50. Power supply: typical value +5V, the maximum cannot exceed +7V. Input and output interface: SMA interface with inner screw and inner hole. Size: approx 5x2.5x1cm/1.97x0.98x0.39in note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.