KY-024 Linear Magnetic Hall Sensor Module

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KY-024 Linear Magnetic Hall Sensor Module is an analog/digital module with a built-in potentiometer to adjust the sensitivity of the sensor. Analog output (AO) works in the same way as on the KY – 003.  Digital output (DO) allows for a pure HIGH/LOW detection and adjusting the sensitivity of that detection with a potentiometer.

In both cases the GND(-) connects to any ground pin (black) on a Raspberry Pi, VCC(+) power supply (red) connects to the 3.3V on RPI and the signal (S or AO/DO) is linked to any GPIO pin (blue).

When using Hall sensor modules have to be mounted in a correct orientation. One side will respond to the N pole of the sensor while the other side will respond to the S pole.

Tech details:

  • Operation voltage 3.3 V, 5 V
  • Temperature range of -40 °C to 85 °C
  • Current input/output max  8/20mA
  • Response time: 3uS   (very fast)


4 pin connector, pins as follows:

  • AO: Analog Output
  • G: 0V Ground
  • +: 3.3V – 5V Supply
  • DO: Digital Output


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