SparkFun CO₂ Humidity and Temperature Sensor - SCD41 (Qwiic)
SparkFun CO₂ Humidity and Temperature Sensor - SCD41 (Qwiic) is backordered and will ship as soon as it is back in stock.
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For orders over 500g (such as bulky items), shipping may cost more than the initial estimate.
We deliver across Australia, and here are the options (based on your location; view them on the cart page):
- Standard Post: Starting at $7 (6+ business days, with tracking)
- Express Post: Starting at $11 (2+ business days, with tracking)
- Same Day Delivery: Available for Sydney orders.
- Non-metro WA, NT, SA, and TAS: May take an additional 2+ days.
The SparkFun SCD41 Qwiic breakout features Sensirion's photoacoustic CO₂ sensor with integrated temperature and humidity measurement. Using the Qwiic connector system, you can easily daisy-chain this sensor with other I²C devices without soldering.
The SCD41 measures CO₂ concentrations from 400 to 40,000 ppm and includes automatic self-calibration over a 7-day period for long-term accuracy. Multiple power modes let you optimise for battery-powered applications.
Key Features
- CO₂ Measurement – Photoacoustic sensing from 400–40,000 ppm
- Temperature & Humidity – Integrated environmental sensors
- Qwiic Connector – Plug-and-play I²C with daisy-chaining
- Low Power Modes – Single-shot mode draws only 0.5mA
- Auto Calibration – 7-day automatic self-calibration
- Arduino Library – Easy data reading with SparkFun library
Specifications
- CO₂ Range: 400 – 40,000 ppm
- Sensor: Sensirion SCD41
- Interface: I²C (Qwiic)
- Voltage: 3.3V
- Current: 18mA typical, 0.5mA single-shot mode
Ideal For
- Indoor air quality monitoring
- HVAC systems
- Smart building sensors
- Environmental data logging
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