Now available from PMD Way are these useful US5881-compatible Hall Effect Sensors in packs of one hundred. They're used to detect when a magnet is nearby. Ideal for all sorts of motion detection, rotation counting, things like that. They're ideally tripped by a magnet. (We also sell magnets). More information: Download datasheet (pdf) Don't forget to check out our full range of sensors if this doesn't meet your needs. And as always, all orders receive free delivery. And remember ... if you: can't find what you need not sure what to order want a bulk deal need technical support or just want to have a talk ... Please email us via [email protected]. To keep up to date with new products, news, tutorials and more - we're on x, Facebook, Instagram, threads, reddit, and instructables.