Sensirion SCD4x CO2 Sensor

The Sensirion SCD4x sets a new benchmark for miniature CO2 sensing. Using photoacoustic NDIR technology instead of bulky optical benches, it fits a full-featured carbon-dioxide, temperature, and humidity monitor into a footprint smaller than a postage stamp. Accurate, drift-free, and energy-efficient, SCD4x is the sensor of choice for demand-controlled ventilation systems, classroom health monitors, and wellness-focused smart-home integrations.

Key Specifications:

• CO2 range: 400—2000 ppm (extended to 10,000 ppm)
• Accuracy: —(40 ppm + 5% of reading)
• Integrated temperature & humidity sensing
• Photoacoustic NDIR (no moving parts)
• I—C interface
• Power: <15 mA average current

Applications:

Education: K—12 classroom CO2 monitoring for cognitive-performance research and district-wide indoor-air-quality compliance dashboards.

Resventilation-rate optimization, sleep-quality CO2 correlation trials, and urban-microclimate monitoring networks.

Industry: Demand-controlled ventilation (DCV) for offices, hotels, and healthcare facilities; cold-storage atmosphere monitoring; and greenhouse climate control.

Consumer: Home-office wellness monitoring, nursery safety alerts, and Home Assistant automations that trigger ventilation based on occupancy.

What is in the Box:

• SCD40 or SCD41 breakout / evaluation kit (model dependent)
• Pin headers
• Quick-start guide & Arduino/Python examples (bilingual FR/EN)
• Calibration certificate (where provided)

Why Buy from Dark AI Factories:

• — Local Canadian warranty & support (FR/EN)
• — Fast shipping across Canada
• — Bilingual documentation
• — Technical support by robotics experts