CO2 PPM sensor for indoor HVAC air quality monitoring

WiFi CO2 Sensor — Indoor Air Quality Monitor for HVAC-Controlled Spaces

The CO2FI measures CO2 concentration in ppm and reports over WiFi — giving building managers and HVAC systems real-time visibility of indoor air quality. High CO2 means the space is inadequately ventilated: meeting rooms fill up quickly; food courts and canteens spike after service. CO2 data drives smarter ventilation decisions.

Why CO2 Matters

Above 1,000 ppm, CO2 causes measurable reductions in cognitive function — drowsiness, reduced concentration, and reduced decision-making ability. Above 1,500 ppm, occupants complain of stuffiness and headaches. ASHRAE and WHO ventilation standards use CO2 as a key indicator of air quality in occupied spaces. Monitoring CO2 gives you evidence — and the ability to act before occupants notice.

Use Cases

• Meeting rooms and boardrooms — CO2 spikes quickly in sealed, full meeting rooms; trigger exhaust fan or fresh air AHU when threshold is exceeded
• Food courts and canteens — high occupancy and cooking generates rapid CO2 buildup
• Classrooms and lecture halls — student performance correlates directly with CO2 levels
• Gyms and fitness centres — high exertion increases CO2 generation significantly
• HVAC demand-controlled ventilation (DCV) — trigger fresh air intake only when CO2 rises above threshold, saving energy vs continuous ventilation

Key Specifications

• Measurement: CO2 in ppm
• Connectivity: WiFi
• Use: Indoor HVAC-controlled spaces
• Standard ranges: Fresh air ~400 ppm | Good: <800 ppm | Acceptable: <1,000 ppm | Poor: >1,000 ppm