Features: 1.I2C Interface: This BME390 environmental sensor supports I2C/SPI interface communication, and it adopts I2C interface by default. 2.Multi Function: This BME390 environmental module can measure barometric pressure, environmental temperature and altitude. 3.Wide Application: This barometric pressure sensor is suitable for GPS modules, wearables, hearables and drones, ideal for applications such as altimeters, environmental monitoring and the Internet of Things. 4.Low Noise: This BMP390 altimeter sensor also features small size, low power consumption and low noise, perfect for altitude tracking application. 5.Level Switching Circuit: This BMP390 sensor has onboard level switching circuit that is compatible with 3.3V/5V operation level. specification:Item Type: Barometric Pressure Sensor Material: Printed Circuit Board Operating Voltage: 5V/3.3V Communication Interface: I2C/SPI Average Working Current: 3.2A(1Hz) Pressure Detection Range: 300 to 1250hPa Air Pressure Absolute Accuracy: 0.50hPa(P=300... 1100hPa T=0...65) Pressure Relative Accuracy: 0.03hPa (P=700... 1100hPa T=25 40) Temperature Drift Coefficient: 0.6Pa/K (25... 40 At 900hPa) Temperature Absolute Accuracy: 1.5 (0...65) Supported Resolution: 0.016Pa (High Accuracy Mode) Sampling Rate: 200Hz Operating Temperature: Minus 40 to 85 Product Size: Approx. 32 x 20mm / 1.3 x 0.8in ( Manual Measurement, Slight Error May Exist ) Hole Diameter: Approx. 2.0mm / 0.08in ( Manual Measurement, Slight Error May Exist ) PackageList:1 x Barometric Pressure Sensor 1 x Connecting Wire