The BME680 is a digital 4-in-1 sensor , humidity, pressure and temperature measurement based on proven sensing principles.BEM680 environmental sensor adopts I2C interface, onboard power supply voltage regulator chip and level signal conversion chip, good compatibility, can be directly compatible with 3.3V and 5V , reserved SPI interface, convenient for expansion.Typical applications:Indoor air quality. Home automation and control. Internet of things. Weather forecast. GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection). Indoor navigation (change of floor detection, elevator detection). Outdoor navigation, and sports applications. Vertical indication (rise/sink speed) Devices:Handsets such as mobile phones, tablet PCs, GPS devices. Wearables. Home weather stations. Smart watches. Navigation . Gaming, e.g. toys. IOT deviceWorking voltage: 1.7V3.6VWorking temperature: -40 ~ + 85 Communication interface: 12C (up to 3.4 MHz) and SPI (3 and 4 wires, up to 10 MHz)Humidity, pressure and gas sensors can be enabled / disabled individuallyThe current consumption at 1 Hz humidity and temperature is 2.1 LA, the current consumption at 1 Hz pressure and temperature is 3.1 LA, and the current consumption at 1 Hz humidity, pressure and temperature is 3.7 LAGas 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 (IAQ) output humidity sensor parameters: response time (0 -83%) ~ 8sAccuracy tolerance 396r ..Hysteresis 1.5% r.h.Pin definitionvCC: Power supply is positiveGND: groundSCL: 12C / clock lineSDA: 12C / SP Data cablesDO: SPI data cable: SPI1 slave enableColour:PurpleMaterial:PCBPackage Contents:1 x BME680 Module1 x pinOnly 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.