Product Description : Product Name: GY-271 QMC 5883 L Module (Triple Axis Compass Magnetometer Sensor Module/3 Axis Electronic Compass Module Magnetic Sensor Module/3 axis magnetic field module). Model: GY-271. Use chips: HMC 5883 L. Power supply: 3-5v. Communication method: IIC communication protocol. GY-271 QMC5883L 3-Axis Magnetic Electronic Compass Module is designed for low-field magnetic sensing with a digital interface and it is perfect to give precise heading information. This compact sensor fits into small projects such as UAVs and robot navigation systems. The sensor converts any magnetic field to a differential voltage output on 3 axes. Power supply module. High quality sink gold board, mechanical welding process, to ensure quality. Application: It is small size of only 13 mm × 14 mm, it can be accommodated in small equipments such as drones reconnaissance aircraft and robot navigation system, mobile phone, laptop computer, car navigation system. Package Includes : : 2 pcs * GY-271 QMC5883L Triple Axis Compass Magnetometer Sensor Module. 2pcs * Pin Strip.