Magnetic induction micro switch with self-calibration

A magnetic induction micro switch with self-calibration, comprising:

• a base provided on a printed circuit board (PCB), a housing cooperating with the base to form an installation cavity, a spring sheet installed in the installation cavity of the base via a conductive support, a limiting frame connected to a movable end of the spring sheet, and an operating member cooperating with the spring sheet and partially extending out of the housing, wherein the spring sheet is connected to the PCB through the support and a first terminal extending downward from the base, a magnetic block is installed on the movable end of the spring sheet, and the magnetic block faces a Hall sensor located on the PCB;
• and a movable contact is provided near a front end of the spring sheet, a stationary contact opposite to the movable contact is provided on the base, the stationary contact is connected to the PCB via a second terminal, in a case where the operating member moves, the operating member pushes the movable end of the spring sheet and a connected section toward the base, causing the movable contact to engage the stationary contact to conduct electricity and making the magnetic block closer to the Hall sensor.