Triple Axis Compass Magnetometer Sensor Module HMC5883L Power supply 3V-5V ?HMC5883L Power supply:3V-5V Triple Axis Compass Magnetometer Sensor Module Immersion Gold PCB, machine welding process to ensure quality. Name: HMC5883L module (three-axis magnetic field module). Use the chip: HMC5883L. Power supply :3-5v.