Frequency output range: 235-6000Mhz.<br> There are two modes: bit frequency and sweep frequency.Minimum control accuracy: 0001Mhz.Amplitude control: -4dB -1dB +2dB +5dB.<br> supply mode: USB 5V supply.Control :Adjust the frequency output through 5 buttons on the board.Serial port control 1: Onboard USB to serial port chip, computer can be directly controlled, no control software is provided.Serial port control mode 2: Through the board serial port interface, controlled by other hardware devices.(Provide<br> serial port control communication protocol)size:65mmx37mmx12mmMaterial:plasticcolour:greenPackage Contents:1 * Spectrum Signal SourceOnly the above package content, other products are not included.Note:<br> Light reflection and different displays may cause the color of the item in the picture a little different from the real thing.<br> The measurement allowed error is +/- 1-3cm.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store