A3144 Hall Effect Sensor Module For Arduino

For detecting the magnetic field   Sensors 3144E hall switch sensor:   Module Features:   1, small size, 32mm X 14mm   2, mounting screw hole of 3mm   3, you can use a DC power supply 3-5.5v   4, real-time output signal of the Hall   5, after the adoption of the comparator output signal more stable finishing   6, the comparator output capability 16mA   7, power indicator   8, the comparator output indicator light   9, control distance is measured: less 1CM   Module Interface Description:   VCC: positive power supply 3.3-5V   GND: negative one   DO: digital output module, the output of low magnetic induction   AO: Hall output voltage in real time   ?