can be independently enabled / disabled, which can measure not only the temperature humidity, also the pressure. The BMP280 sensor is great for all sorts of weather sensing and can even be used in both I2C and SPI. for measuring barometric pressure with +/-1 absolute accuraccy, and temperature with +/-1.0 Celsius accuracy. Because pressure changes with altitude, and the pressure measurements are good, you can also use it as an altimeter with +/-1 meter accuracy. Supply Voltage: 1.8 - 5V DC Interface: I2C (up to 3.4MHz), SPI (up to 10 MHz) Operational Range:Temperature: -40 to +85Celsius Humidity: 0-100% Pressure: 300-1100 colour:purple Material:copper Package Contents: 3*Digital Sensor Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.