1. The board is an integrated module of the pressure sensor test board, and there is no relevant information such as drawings and procedures. This is just a pressure sensor test board or pressure sensor display.2. The module is designed for wide voltage, and the power supply range is DC 3-5.5V. There are 2 power supply methods. USB cable power supply or own wiring (reserved interface).Please note: The digital tube display module does not have a power cord. If you need USB power supply, please buy it yourself.3. The module is connected to the pressure sensor first, and then energized for use. After connecting with the pressure sensor for the first time, calibration is required. The board has functions such as peeling and calibration. The parameters can be saved after power-off, and there is no need to calibrate again in the future. (If you are unclear, please see the operation video at the bottom)4. Module size: 50 x 30 x 10mm, using 4-digit digital tube display. It can display up to 9999g. The commonly used 5KG or 10KG pressure sensor can be connected. Generally, the accuracy of the 5Kg range sensor fluctuates around 1g. If the fluctuation is large, it may be caused by unstable power supply. Please replace the power supply and try it. (Calibration is required after the first connection)Colour: as shownMaterial: plasticPackage Contents:1 x Pressure Sensor ModuleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.