Can be activated/deactivated independently, allowing it to measure not only temperature but also pressure. The BMP280 sensor is excellent for all types of weather sensing and can even be used in both I2C and SPI. For measuring barometric pressure with +/-1 absolute accuracy and temperature with +/-1.0 Celsius accuracy. Since 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) Operating Range: Temperature: -40 to +85 Celsius Material: copper Color: purple Package Contents: 3 x 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 picture to be slightly different from the real thing. The allowable measurement error is +/- 1-3 cm.