The BME680 is a 4-in-1 digital sensor with gas, humidity, pressure, and temperature measurement based on proven sensing principles. The BEM680 environmental sensor uses an I2C interface, an onboard power supply voltage and level signal conversion, good compatibility, can be directly compatible with 3.3V and 5V systems, reserved SPI interface, convenient for expansion. Typical Applications: Indoor air quality. Home automation and control. Internet of Things. Weather forecasting. Enhanced GPS (e.g., improved time to first fix, dead reckoning, tilt sensing). Indoor navigation (floor change detection, elevator detection). Outdoor navigation, leisure, and sports applications. Vertical (climb/) indication Target Devices: handsets such as mobile phones, tablets, GPS devices. Wearable devices. Home weather stations. Smartwatches. Navigation systems. Games, such as flight. IOT device Operating Voltage: 1.7V-3.6V Working Temperature: -40℃~+85℃ Communication Interface: I2C (up to 3.4 MHz) and SPI (3 and 4 wires, up to 10 MHz) Humidity, pressure, and gas sensors can be enabled/disabled individually Consumption at 1 Hz of humidity and temperature is 2.1 μA, consumption at 1 Hz of pressure and temperature is 3.1 μA, and consumption at 1 Hz of humidity, pressure, and temperature is 3.7 μA Gas sensor parameters: response time (33-63%) Less than 1s (for new sensors) power consumption in ultra-low power mode Less than 0.1 mA output data processing direct indoor air quality index (IAQ) output humidity sensor parameters: response time (0 -83%) ~ 8s Accuracy Tolerance ± 396r.. Hysteresis ± 1.5% Pin Definition VCC: power supply is positive GND: ground SCL: I2C clock line / SDA: I2C/SP! Data line CS: SPI slave enable Color: Purple Material: PCB Package Contents: 2 x BME680 Modules 2 Pins Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real one. The allowed measurement error is +/- 1-3 cm.