16mm Reed Switch Sensor Magnetic Switch

16mm Reed Switch Sensor Magnetic Switch.

A Reed Switch (16mm Magnetic Sensor) is a compact electromechanical switch operated by a magnetic field. It consists of two ferromagnetic contacts (reeds) sealed inside a glass capsule (?16 mm length) filled with inert gas for protection.

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• Working Principle:
• When a magnet is brought close, the reeds are magnetized and attract each other, closing the circuit (ON).
• When the magnet moves away, the reeds separate, breaking the circuit (OFF).
• Size: 16 mm length (smaller than the common 22 mm type, suitable for compact devices).
• Contact Forms: Available in Normally Open (NO), Normally Closed (NC), or Changeover (SPDT) versions.
• Electrical Rating: Typically supports 0.25–0.5A at up to 100–200V AC/DC depending on model.
• Durability: Millions of switching operations possible due to contactless magnetic actuation.

Applications

• Security Systems: Used as a door/window sensor in burglar alarms.
• Proximity Detection: Detects nearby magnetic fields in automation and robotics.
• Consumer Electronics: Used in mobile devices (flip covers, magnetic accessories).
• Industrial Equipment: Detects moving or rotating machine parts without physical contact.
• Automotive: Door open/close detection, seatbelt latch sensing, gear shift detection.
• Medical Devices: Non-contact position sensing for portable equipment.
• DIY / Hobby Projects: Widely used with Arduino, Raspberry Pi, and microcontrollers for magnetic or proximity sensing.

*Product image for illustration purposes only, actual product may vary.