This product works quite well and produces repeatable results. For those wondering about the wiring, It's rather easy and somewhat obvious, my first guess was correct:Red = Excitation +Black = Excitation -White = Amplifier+, Signal+ or Output+Green = Amplifier-, Signal- or Output-The white and green wires should be interchangeable considering that most load cell amplifiers operate using a differential amplifier.Once you get the load cell working properly you will simply have to calibrate it with a known weight.I' m using this product with along with the follow load cell conversion module:DIYmall 2pcs Hx711 Weight Weighing Load Cell Conversion Module Sensors Ad Module for Arduino Microcontrollerhttps://www.amazon.com/gp/product/B010FG9RXO/ref=oh_aui_search_asin_title?ie=UTF8&psc=1