Reed switches, Reed Sensors, and Magnet Sensors find applications in vast areas, from simple position sensing in doors, to more complicated ones used in the military, to more sophisticated cellular phone radio frequency (RF) switching electronics and in the medical industry. The basic Reed Switch, Reed Sensor or Magnet Sensor is actuated in five different ways. Simple end Position Sensing, Multiple Pulse counting, Electromagnetic Coil sensing, Thermal Ferrite Sensing, and magnet biased reverse polarity applications. More information about these types are listed under Applications Overview. Although every field cannot be listed here, we have broadly classified the them into various fields such as in the Internet of Things (IoT), Mobile Electronics, Domestic and White Goods, Medical, Automotive, Home Security, Industrial Automation and in Toys.