This barometer sensor has a Bosch BMP085 that is a high-accuracy chip to detect barometric pressure and temperature. It can widely measure pressure ranging from 300hPa to 1100hPa, AKA +9000m to -500m above sea level, with a super high accuracy of 0.03 hPa (0.25m) in ultra-high resolution mode. This barometer sensor is 3.3V and 5V compatible, so it can be used in Arduinos without modification.

Specifications:

• Low consumption: 5uA in standard mode
• High accuracy: resolution ratio is 0.06hPa (0.5 meter) in low power mode, 0.03hPa (0.25 meter) in high linear mode
• Temperature output
• I2C interface
• Temperature compensation
• Does not need external clock
• Supply voltage: VDDA: 1.8V-3.6V, VDDD 1.62V-3.6V
• Response time: 7.5ms
• Standby current: 0.1uA
• Pressure range: 300 - 1100hPa (~ altitude 9000 - 500m)