Sensirion Sleep Quality & CO2 - Unlocking Restorative Sleep

More About Sensirion

Sensirion Sleep Quality and CO₂ sensors provide solutions that directly manage the effects of ventilation on sleep quality, differentiate end-user devices, and provide users with actionable insights for healthier living. Carbon dioxide (CO₂) is a naturally occurring gas exhaled by humans and widely used as a reliable proxy for ventilation adequacy. Continuous CO₂ monitoring is essential for identifying ventilation issues and enabling targeted improvements in bedroom air quality. While CO₂ is not toxic at typical indoor concentrations, growing scientific evidence shows that poor ventilation can impair sleep quality, alter brain function, and disrupt autonomic regulation.

Sensirion sensors can be integrated into various residential, consumer, and smart devices for CO₂ monitoring during sleep.

Features

Proven sensing technologies - industry-leading photoacoustic NDIR and thermal conductivity CO₂ sensors deliver direct, science and technology-backed solutions for stable measurements across multiple applications
Broad portfolio for multiple applications - from high-accuracy HVAC sensors to ultra-compact, low-power solutions for battery-operated consumer devices

Building standard compatibility - Sensirion’s photoacoustic NDIR CO₂ sensors support major indoor air quality standards, including WELL, RESET, LEED, California Title 24, and ASHRAE 62.1

Applications

Thermostats
Indoor air quality monitors
Air purifiers
Air conditioners
HVAC systems

Smartphones
Smartwatches
Alarm clocks
Smart speakers
Earbud cases

Sensor Solutions

Sensirion provides a comprehensive portfolio of CO2 sensors designed for a variety of application needs:

• SCD41 (photoacoustic NDIR)
• Compact, high-accuracy sensor for HVAC systems and building automation
• Supports standards such as California Title 24, RESET^®, and WELL, and is available as part of the SEN66 module

• SCD43 (photoacoustic NDIR)
• Maintains the SCD41 footprint with enhanced performance for commercial-grade applications
• Compatible with ANSI/ASHRAE 62.1-2022 Addendum, Title 24, RESET, and WELL
• Ideal for high accuracy and certification readiness

• STCC4 (thermal conductivity)
• Optimized for cost-sensitive and space-constrained consumer electronics
• Miniature, low-power, and suitable for alarm clocks, wearables, smart speakers, and other home ecosystem devices
• Also available in the SEN63C module for easy integration