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Magnetic fields are equal parts fun and useful. We've got compass sensors, hall-effect sensors, and reed switches to integrate with your next project.
  1. Magnetic contact switch (door sensor) ADA375 Adafruit in Australia - Express Delivery Australia Wide

    Magnetic contact switch (door sensor)

    SKU: ADA375
    This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is 'open' (no connection between the two wires). The other half is a .. read more Learn More
    $6.95 AUD, inc GST
    AUD, inc GST
    delivered by
    Fri 17th of Aug

    $6.95 AUD

  2. A3213 Hall Effect Sensor 014-A3213EUA-T

    A3213 Hall Effect Sensor

    SKU: 014-A3213EUA-T
    Unlike other Hall-effect switches, either a north or south pole of sufficient strength will turn the output on; in the absence of a magnetic field, the output is off. Learn More
    $3.95 AUD, inc GST
    AUD, inc GST
    delivered by
    Fri 17th of Aug

    $3.95 AUD

  3. Reed Switch COM-08642 Sparkfun Australia - Express Delivery Australia Wide

    Reed Switch

    SKU: COM-08642
    This is a small device called a reed switch. 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. Learn More
    $2.70 AUD, inc GST
    AUD, inc GST
    delivered by
    Fri 17th of Aug

    $2.70 AUD

  4. Hall Effect Sensor - US1881 COM-09312 Sparkfun Australia - Express Delivery Australia Wide

    Hall Effect Sensor - US1881

    SKU: COM-09312
    The US1881 is an integrated Hall effect latched sensor. That’s nice but what does it do? Holding a magnet near the sensor will cause the output pin to toggle. This makes for a robust presence sensor. A reed sensor also works nicely, but can be limited by the glass encapsulation and size. A hall effect sensor is much smaller, but can handle less current than a reed switch. Learn More
    $1.38 AUD, inc GST
    AUD, inc GST
    delivered by
    Fri 17th of Aug

    $1.38 AUD

  5. LSM303D 3D Compass and Accelerometer Carrier with Voltage Regulator POLOLU-2127 Pololu Australia - Express Delivery Australia Wide

    LSM303D 3D Compass and Accelerometer Carrier with Voltage Regulator

    SKU: POLOLU-2127
    The LSM303D combines a digital 3-axis accelerometer and 3-axis magnetometer into a single package that is ideal for making a tilt-compensated compass. The six independent readings, whose sensitivities can be set in the ranges of ±2 to ±16 g and ±2 to ±12 gauss, are available through I²C and SPI interfaces. This LSM303 carrier board includes a 3.3 V voltage regulator and integrated level shifters that allows operation from 2.5 to 5.5 V, and the 0.1″ pin spacing makes it easy to use with standard solderless breadboards and 0.1″ perfboards. Learn More
    $10.00 AUD, inc GST
    AUD, inc GST
    delivered by
    Fri 17th of Aug

    $10.00 AUD

  6. Magnetic Door Switch Set COM-13247 Sparkfun Australia - Express Delivery Australia Wide

    Magnetic Door Switch Set

    SKU: COM-13247
    This is the Magnetic Door Switch Set, a small reed switch assembly specifically designed to alert you when doors, drawers, or any other aperture opens. These types of switches are primarily used in home security systems. One half of the assembly set on a window or door frame and the other attached to the window or door itself. When the switch set is separated from each other the contact is broken and triggers an alarm. Learn More
    $4.77 AUD, inc GST
    AUD, inc GST
    delivered by
    Fri 17th of Aug

    $4.77 AUD

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