Altitude click features a MEMS pressure sensor MPL3115A2, which provides accurate pressure/altitude (20-bit) and temperature (12-bit) data. Resolution is down to 30 cm (1.5 Pa). The MPL3115A2 contains automatic internal data processing with data acquisition and compensation. It features 32 sample FIFO buffer to minimize the overhead of collecting multiple data samples. It can autonomously collect data at programmed intervals and store it up to 12 days depending on data acquisition rate (1 second - 9 hour). Board uses I2C communication interface and is designed to use 3.3V power supply only.