The BME280 sensor, an environmental sensor with temperature Humidity, barometric pressure that is the generation upgrade to the BMP085/BMP180/BMP183. This sensor is great for all sorts of weather sensing and can even be used in both I2C and SPI This precision sensor precision sensing solution for measuring barometric pressure with ±1 absolute accuraccy, and temperature with ±1.0&;C accuracy. Because pressure changes with altitude, and the pressure measurements are so good, you can also use it as an altimeter with ±1 meter accuracy colour: purple Material: copper Package Contents: 3 x BME280 Digital Sensor 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.