sensor: DHT11,MQ-9,MQ-135,Sonar sensor

CCS811 (T/H compensated with ENS210)

My own device based on ESP8266. Sensor for temp, humm and pressure is BME280. Second sensor is MH-Z19 for CO2 concentration. Device located at office or home, Moscow, Russia.

Weatherduino Pro2 Plus Air Quality Monitor

iAQ-core indoor air quality sensor

LoRa CO2 sensor demo

AQI index computed from a WheatherDuino station

Measuring of CO2 concentration, relative humidity, temperature and atmospheric pressure

Essai ESP8266-12E

Skoltech_Innovation_workshop_IoT_group_3: perform an air quality analysis of a meeting room and predicting its readiness for the next meeting

CO2 meter connected on an Arduino

Air check system (CO2-K30 \ Dust-PMS5003)

CO2 level, mh-z14a

AIR QUALITY MONITORING AND CONTROL

Aquário 100l - Água doce - Plantado......................... (CO2 11:15 - 21:00).................................................... (Luz 15:00 - 23:00).......................................................