Main Chip: ADXL345 Model: -291 Power Supply: 3-5V Means of Communication: IIC / SPI Communication Protocol Measuring Range: 2g /16g Digital-Output Triple-Axis Accelerometer with a Programmable Full Scale Range of 2g, 4g, 8g and 16g and Integrated 16-bit ADCs Accelerometer Normal Operating Current: 450A Ultralow Power: as low as 23 A in Measurement Mode and 0.1 A in Standby Mode at = 2.5 V (typical) Sleep Mode Current: 8A Communication: SPI (3- and 4-wire) and I2C Digital Interfaces -Programmable Interrupts Wake-On-Motion Interrupt for Low Power Operation of Applications Processor color:Blue Material:ABS Package Contents: 2 x -291 ADXL345 Module 2 x 8pin header Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.