Features:

• Nine-axis modules (three-axis gyroscope + triaxial accelerometer + three-axis magnetic field)
  
• Using the chip: Atmega328 + ITG3205 + ADXL345 + HMC5883L
• Power supply: 3-5V
• Means of communication: serial communication protocol
• Direct data: YAW ROLL PITCH
• Heading angle (YAW ) 180
• Roll angle (ROLL) 180
• Pitch angle (PITCH) 180
• Serial Baud Rate: 57600
• Size: 2.3cm * 1.7cm

Kit include:

• 1 GY-951 Module
  

Documents:

• Datasheet (ITG-3200)
• Datasheet (ADXL345)
• Datasheet (HMC5883L)
• AHRS Code
• AHRS/Head-tracker Tutorial
• GitHub
• Example Firmware
• Document Link