CCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor

This module uses low power sensing technology to detect volatile organic compounds (VOCs) in the room. It has integrated MCU, the sensor has an onboard processing capability, without host intervention. The Si7021 is a digital relative humidity and temperature sensor. This monolithic CMOS IC integrates humidity and temperature sensor components, analog-to-digital converters, signal processing, calibration data, and I2C host interface. BMP280 is an absolute pressure sensor designed specifically for mobile applications. Application: GPS enhanced navigation, Indoor navigation (ground detection, elevator detection) Outdoor navigation, leisure and sports applications, Weather forecast,  Application of health care (e.g. spirometry), Vertical speed indicator (e.g. rising or sinking speed).

SPECIFICATIONS:

• Power supply: 3.3V
• Relative humidity accuracy: + 2% (typical)
• Temperature accuracy: + 0.2 C (typical value)
• Excellent stability under high humidity
• 14 Bit Measurement Resolution
• Sleep mode current: 100nA
• Material: electronic components
• Size: 15x21mm