Reed Switch

Reed switch, single pole. Contact is closed by magnetic force. The sensitivity for reed switches is measured in AT (ampere-turns). Lower AT means that the switch is more sensitive to magnetism.



  • When the device is exposed to a magnetic field, the two ferrous materials inside the switch pull together and the switch closes.
  • When the magnetic field is removed, the reeds separate and the switch opens.
  • This makes for a great non-contact switch.
  • This switch can carry up to 1.2A.


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