Fangrui Product Details This Module Is Designed For Wide Voltage, With A Power Supply Range Of Dc 3-5.5v. There Are Two Power Supply Methods. Usb Cable Power Supply Or Self Wiring (with Interface Reserved) The Module Should Be Connected To The Pressure Sensor First, And Then Powered On For Use. First Time With After Connecting The Pressure Sensor, Calibration Is Required. The Board Has Peeling And Calibration Features Waiting For Functions. The Parameters Have Power-off Saving And Do Not Require Recalibration For Future Use. Using A 4-digit Digital Display, It Can Display Up To 9999g. Can Handle Commonly Used Pressures Of 5kg Or 10kg Sensors With A Range Of 5kg Generally Have An Accuracy Fluctuation Of Around 19. If The Fluctuation Is Large, It May Be Caused By Unstable Power Supply. Please Try Replacing The Power Supply And Calibrate It After The First Connection, The Module Should Be Connected To The Hx711 Pressure Sensor First, And Then Powered On For Use. After Connecting To The Hx711 Pressure Sensor For The First Time, Cal