DFRobot Magnetic Switch

DFRobot Magnetic Switch is comprised of an inducting end and trigger. The trigger has a reed switch enclosed inside and there is a cable connected to it. The inducting end is a magnet enclosed within a plastic case. When the distance of these two parts is smaller than 1cm, the reed switch will be connected. The position change of an object can be detected for realizing functions like travel controlling, position-limitation protection, and more.