PROXIMITY SWITCH DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a proximity switch device equipped with a function suitable for security against crimes and having high reliability. SOLUTION: This proximity switch device is equipped with a proximity switch 10 containing a permanent magnet 16 disposed so as to show a designated polarity and having a means of switching an electrically connected condition between contact and non contact, and a movable piece to switch an electrically connected condition by coming close to the proximity switch 10 while having magnetism with a polarity keeping designated relation to the polarity of the permanent magnet 16.