A breakout board based on the three-axis accelerometer IC MMA8452 is the GY-45 MMA8452 3-Axis Accelerometer Module. The MMA8452 is a smart, low-power, capacitor-type micromechanical accelerator with a 12 bit resolution. This product offers up to two interruptions, a rich embedded system function, and flexible programming options. 2g/4g/8g ranges are supported by the MMA8452. Details: I2C digital output three-axis accelerometer MMA8452 Two interruption functions are possible. Three channels for motion detection Free detection of falls detection of pulses detection of vibrations Power Source: 3-5V The kit comes with one GY-45 MMA8452 Digital Triaxial Accelerometer Tilt Sensor Module and measures 14.5 x 20.5 mm.