Review on 🌬️ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology by Edward Freeland

Works great, it can definitely catch when we leave the house and come back since we have houseplants. You can set or disable the alarm threshold. It is set much lower than the OSHA Transitional Normal Maximum. In terms of humidity, it matches our Nest thermostat. However, it is recommended to keep CO2 levels in a building as low as possible for optimal health.