Grove 3 Axis Digital Accelerometer, ADXL345 - 

The Grove ADXL345 is a small, thin, ultra low power 3-axis accelerometer, providing high resolution (13-bit) measurement at up to ±16 g. The ADXL345 is well suited for mobile device applications. It measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (3.9 mg/LSB) enables measurement of inclination changes less than 1.0°. Grove - ADXL345 is with the extreme low power consumption, as low as 23 μA in measurement mode and 0.1 μA in standby mode. The Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation. There is an on-board a 4-pin Grove interface (3-5VDC) for easily connect with Arduino boards and Seeeduino boards.