AH and AH5 analog Hall effect sensors provide an output that is ½ the supply voltage with the ratiometric -5V option when there is no magnetic field present. When a South Pole field is detected the output increases toward the supply voltage. A North Pole field decreases the output voltage towards 0V. AH sensors have a gain of 2.5mV/Gauss for measuring fields of +/1000 Gauss. AH5 sensors have a gain of 5.0mV/Gauss for detecting fields of +/- 500 Gauss.