Introduce hall sensor functionality to your Arduino design with this TinkerKit Hall Sensor Module from Arduino. Simply linking to the input connector of your TInkerKit Sensor Shield, the module generates voltage which measures distance from a magnet. The voltage strength reflects the magnetic field surrounding the sensor. You’ll also find this module can detect the magnetic field produced in a wire or coil. Plus this versatile shield comes complete with a signal amp, green power status LED and yellow LED with variable brightness to indicate output values.