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We have ✅ 8 available of the DF-SEN0387 in our Sydney warehouse. An extra 77 units available with a short lead time.

Express post delivery (2-5 business days)

This magnetic switch consists of two parts: a reed switch sensor with cable and a magnet trigger in a plastic housing. When the magnet is brought within approximately 1 cm of the sensor, the reed switch closes, allowing you to detect position changes, door/window states, and proximity events.

The switch is characterised by low power consumption, a wide voltage range, long lifespan, and reliable operation — making it well suited for security, home automation, and position-sensing applications.

Key Features

  • Reed Switch Sensor – Activates when magnet is within ~1 cm
  • Two-Part Design – Separate sensor and magnet for flexible mounting
  • Low Power Consumption – Suitable for battery-powered applications
  • Long Lifespan – Reliable mechanical reed switch
  • Wide Voltage Range – Compatible with various logic levels

Ideal For

  • Door and window open/close detection
  • Security and alarm systems
  • Position sensing and limit switches
  • Smart home automation

Package Contents

  • 1× Reed switch sensor with cable
  • 1× Magnet trigger

The Magnetic Switch appears in the following collections:

SKU DF-SEN0387
by DFRobot