Reed Sensors

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Why choose Littelfuse Reed Sensors? Hamlin, now part of Littelfuse, Inc., has a long history of leading the industry in providing magnetic sensing solutions. Our experts are committed to delivering the best products and solutions for your specific needs.



  • No physical contact required to operate the Switch
  • Zero Power required for switch actuation
  • Wide operating temperature range adequate for use in hot and cold temperatures
  • Overmolded sensors provide additional protection against mechanical stresses
  • Reliable switching for millions of open/ close operations
  • Value-added customization
  • Low-cost alternative to mechanical Switches


  • Proximity sensing : Refrigerator Door
  • Level sensing : Tank water Level
  • Speed sensing : Treadmill pulley
  • Flow sensing : Tankless Water Heater