Working 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%) <1s (for new sensors) power consumption in ultra-low power mode <0.1 mA output data processing direct indoor air quality (IAQ) index output humidity sensor parameters: response time (0 -83%) ~ 8sAccuracy tolerance ± 396r ..Hysteresis ± 1.5% r.h.Pin definitionvCC: Power supply is positiveGND: groundSCL: 12C / SP1 clock lineSDA: 12C / SP! Data cablesDO: SPI data cableCS: SPI1 slave enable