MPL3115A2 - I2C Barometric Pressure/Altitude/Temperature Sensor Shipping:1 day For the power we recommend

For the power we recommend a 5V USB-interface adapter higher than 1000mA

PWMB LOW PWM input for channel B

Can survive input voltages up to 40 V 2

the outdoor performance and accuracy of different reflectivity are improved

It is designed to be submersible in water

MPL3115A2 - I2C Barometric Pressure/Altitude/Temperature Sensor Shipping:1 day For the power we recommendThis pressure sensor from Freescale is a great low cost sensing solution for precision measurement of barometric pressure and altitude. The MPL3115A2 has a typical 1. 5 Pascal resolution, which can resolve altitude at 0. 3 meters (compare to the BMP180 which can do 0. 17m). It has some upsides compared to the BMP280 , such as interrupt outputs for ultra low power usage, and its also a heck of a lot easier to read altitude with a built in altimeter