It is an electro-mechanical device that can measure acceleration forces, these forces can be static like a constant force such as the gravity of earth or they can be dynamic like caused by movement or vibration. It comes with an on-board voltage regulator and works in a Voltage range of 3 to 5V this board requires no external devices. It can directly interface with an ADC of a microcontroller without any external components. This board can sense motion or tilt in 3 axes. It has a 5 pin interface Vcc, GND, X out, Y out, Z out, and Self Test.