The Compass Module 3-Axis HMC5883L is a low-field magnetic sensing device with a digital interface. The compass module converts any magnetic field to a differential voltage output on 3 axes. This voltage shift is the raw digital output value, which can then be used to calculate headings or sense magnetic fields coming from different directions. The module is designed for use with a large variety of microcontrollers with different voltage requirements.
QMC5883L module (three-axis magnetic field module)
1-2 degree heading accuracy
Integrated 12-bit ADC
160Hz max data rate
A range of -8 to +8 Gauss
Auto and personal navigation.
Location-based services (LBS)
1 x GY-273 HMC5883L Triple Axis Compass Magnetometer Sensor Module For Arduino ( 3V-5V )