A. The BME680 is a digital 4-in-1 sensor that can measure humidity, pressure, and temperature based on proven sensing principles. B. The BEM680 environmental sensor uses an I2C interface. It has an on - board power voltage regulator chip and a level signal conversion chip, with good compatibility. It can be directly compatible with 3.3V and 5V, and a SPI interface is reserved for easy expansion. C. Typical applications: - Indoor air quality monitoring. - Home automation and control. - Internet of Things (IoT). - Weather forecasting. - GPS enhancement (e.g., improved time to first fix, dead reckoning, slope detection). - Indoor navigation (floor change detection, elevator detection). - Outdoor navigation and sports applications. - Vertical indication (ascent/descent speed). D. Applicable devices: - Handheld devices such as mobile phones, personal computers, GPS devices. - Wearable devices. - Home weather stations. - Smart watches. - Navigation devices. - Gaming devices, such as toys. - IoT devices. E. Operating voltage: 1.7V - 3.6V F. Operating temperature: -40°C ~ +85°C G. Communication interfaces: I2C (up to 3.4MHz) and SPI (3 - wire and 4 - wire, up to 10MHz) H. The humidity, pressure, and sensor can be individually enabled/disabled. I. When the measurement frequency of humidity and temperature is 1Hz, the current consumption is 2.1μA; when the measurement frequency of pressure and temperature is 1Hz, the current consumption is 3.1μA; when the measurement frequency of humidity, pressure, and temperature is 1Hz, the current consumption is 3.7μA. J. Sensor parameters: - Response time (33 - 63%): Less than 1s for new sensors. - Power consumption in ultra - low power mode: Less than 0.1mA. - Output data processing: Directly output indoor air quality (IAQ). - Humidity sensor parameters: Response time (0 - 83%) is approximately 8s. K. Accuracy tolerance: 3% r.h. L. Hysteresis: 1.5% r.h. M. Pin definitions: - vCC: Positive power supply. - GND: Ground. - SCL: I2C/Clock line. - SDA: I2C/Data cable. - sDO: SPI data cable. - (Some content is missing here): SPI slave enable. N. Color: Purple O. Material: Printed Circuit Board (PCB) P. Package contents: - 2 BME680 modules. - 2 pins. Only the above package contents are included, and no other products are included. Q. Notes: Light reflection and different displays may cause slight differences between the item color and the actual object. The measurement tolerance is +/-1 - 3cm.