The principle of Magnetic door switches is produce a magnetic field around the sensor through changed the position and polarity of trigger so that make the contacts of the sensor action. Hermetically sealed, life at least 1 million times, easy installation, can adjustment according to different customers' application environment.
Magnetic door switch,Magnetic contact sensor:
Classic design, compact size. Choice of normal open or normal close No standby power requirement. Customer can define activated distance, cable length and connector. Hermetically sealed, suit to tough environment and long life.