Characteristic:

       This module integrates two sensor chips CCS811 and HDC1080 on one board. The measured values of the two sensors can be read separately by IIC communication. The HDC1080 is a low power, high precision, miniature digital temperature and humidity sensor chip.

       The CCS811 is a low-power miniature gas digital sensor for air quality monitoring. A metal oxide (MOX) sensor is integrated to measure the total equivalent volatile organic compound eTVOCs and equivalent eCO2 content. A microcontroller MCU is integrated inside the chip. The gas content value measured by CCS81 is self-corrected by reading the temperature and humidity value of the HDC1080 sensor and writing it to the CCS811 internal environment temperature and humidity correction register.

• Working temperature: -20 ° C ~ 70 ° C

• Humidity sensor measurement range: 0 ~ 100% RH

• Humidity sensor accuracy: 14 bits error ± 2% RH

• Humidity repeatability accuracy: ±0.1% RH

• Humidity sensor response time: 15s

• Humidity conversion time: 8 bits 2.5ms, 11 bits 3.85ms, 14 bits 6.5ms

• Temperature sensor error: ±0.4 °C (ambient temperature 5 ° C ~ 60 ° C)

• Temperature repeatability accuracy: ±0.1 °C

• Temperature conversion time: 11 digits 3.85ms, 14 digits 6.5ms

• IIC communication frequency: 400KHz

• IIC slave address: 1000000x (x read/write control bit)

• Power supply: recommended 3.3V