BMP180 Barometric Pressure sensor

The BMP180 is the function compatible successor of the BMP085, a new generation of high precision digital pressure sensors for consumer applications.
The ultra-low power, low voltage electronics of the BMP180 is optimized for use in mobile phones, PDAs, GPS navigation devices and outdoor equipment. ... With a low altitude noise of merely 0.25m at fast conversion time, the BMP180 offers superior performance. The I2C interface allows for easy system integration with a microcontroller.
The BMP180 is based on piezo-resistive technology for EMC robustness, high accuracy, and linearity as well as long term stability.


Features:
Item name: GY-68 BMP180 Sensor Module
Size: 13mm x 10mm
Supply Voltage: 1.8V to 3.6V
Max I2C Speed: 3.5Mhz
Low power consumption: 0.5uA at 1Hz
I2C interface
Very low noise: up to 0.02hPa (17cm)
Full calibrated
Pressure Range: 300hPa to 1100hPa (+9000m to -500m)