Always confirm information before making software, design or purchasing decisions.
✅3V
Datasheet: https://www.sciosense.com/wp-content/uploads/2020/01/SC-001232-DS-2-CCS811B-Datasheet-Revision-2.pdf
Adafruit: https://learn.adafruit.com/adafruit-ccs811-air-quality-sensor
Sparkfun: https://www.sparkfun.com/products/14193