MPL3115A2 Altitude/Pressure Sensor Breakout 1.95V to 3.6V Supply Voltage, internally regulated by LDO. 1.6V to 3.6V Digital Interface Supply Voltage Fully Compensated internally. Pressure: 20-bit measurement (Pascals) Altitude: 20-bit measurement (meters) Temperature: 12-bit measurement (degrees Celsius) Resolution down to 1 ft. / 30 cm. Ability to log data up to 12 days using the FIFO I2C digital output interface (operates up to 400 kHz)