MW921 brand manufacturers: Matrix Opto, Twicea stock, MW921 reference price.Matrix Opto. MW921 parameters, MW921 Datasheet PDF and pin diagram description download.You can use the MW921 Magnetic Sensors - Compass, Magnetic Field (Modules), DSP Datesheet PDF, find MW921 pin diagram and circuit diagram and usage method of function,MW921 electronics tutorials.You can download from the Twicea.