資料來源:https://www.sparkfun.com/products/8643
These are small rare earth magnets - 0.25" cubed. Composed of Neodymium/Iron/Boron (NdFeB), these magnets are curiously strong and make for a great way to attach tools to a metal workbench, hold small children to a fridge, and as a trigger for reed switches.
Activates the reed switch (shown below) at a distance of about 3cm.
Sold in single units.
這些都是小稀土磁鐵 - 0.25“立方組成釹/鐵/硼(釹鐵硼),這些磁鐵是好奇地做強,做大的附加工具,金屬工作台一個偉大的方式,舉辦小型的孩子一台冰箱,並作為蘆葦觸發開關。
激活在約3cm的距離簧片開關(下面示出)。
賣出單台。