Based on their new BMP280 sensor, an upgraded version of the old BMP180 Barometer Sensor (BMP180), this module provides accurate measurements of barometric pressure and ambient temperature. The air pressure can be measured in a range of 300 to 1100hPa with an absolute accuracy of 1.0. For temperature, the sensor works perfectly for temperatures between -40 and 85 with an accuracy of 1. Thanks to its high accuracy in measuring pressure and how pressure changes with altitude, altitude is calculated with an accuracy of 1 meter, making it an accurate altimeter as well. Another great thing about this module is that you don't even need to worry about I2C collisions because it provides both I2C and SPI interfaces. To use SPI, simply desolder the binding pads on the back. If you choose I2C, the board also provides 2 I2C addresses to choose from as you wish. Note: As the sensor is quite sensitive to environmental conditions, please DO NOT touch it with your fingers. High accuracy, absolute accuracy of 1.0 for pressure measurement and 1 accuracy for temperature measurement. Supports both I2C and SPI communication. Can be used as an altimeter with an accuracy of 1 meter. Supply Voltage: 5V Power Consumption: 0.6mA Barometric Pressure Measurement Range: 300 - 1100 Accuracy: 1.0 Temperature Measurement Range: -40 to 85 Accuracy: 1 Interface: I2C and SPI Material: Metal + Plastic Color: Purple Package Contents: 10 * Digital Sensor Module Only the above package content is included, 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 +/- 1-3cm.