This application is designed to work with the MH-Z19 CO2 sensor and ESP32 WIFI Development Board. You can make the entire carbon dioxide, humidity and temperature detector yourself at home.

Scientific research indicates that before our civilization is destroyed by global warming, severe impairment of human cognitive and intellectual abilities will occur sooner. Because of the rapid increase in atmospheric CO2 concentrations, catastrophic effects on the human species will come much faster than for most animals.