> For the complete documentation index, see [llms.txt](https://learn.arduinosa.co.za/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.arduinosa.co.za/sensor-kits/37-in-1-sensor-kit/linear-hall-sensor.md).

# Linear Hall Sensor

![](/files/-MS2MQOVESO-hQZm_hmB)

Linear Hall Sensor module to detect the presence of a magnetic field near the sensor. Variables such as field strength, polarity and position of the magnet relative to the sensor will affect point at which the ‘DO’ output switches to a high level (i.e. active high). The circuit sensitivity can be adjusted with a pot. An analog output signal from the sensor is available at pin ‘AO’.