7Semi SGP41 Air Quality Sensor Module – Digital VOC & NOx (I²C) (Qwiic)

SKU
ES-12288

Detects changes related to VOC and NOx for indoor air quality monitoring.

7Semi SGP4X VOC sensor module top view showing gas sensor chip and I2C pins

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23mm X 16mm X 4.70mm

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$14.90
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About this product

The 7Semi SGP41 Air Quality Sensor is designed for continuous indoor air-quality monitoring using Sensirion’s MOx gas-sensing technology. It detects changes in airborne gases and converts them into digital signals that can be read easily through an I²C interface. An integrated temperature-controlled micro-hotplate keeps the sensing element at the required operating condition for reliable and repeatable measurements. The sensor also supports external temperature and humidity input for compensation, helping maintain consistent performance under changing environmental conditions. The measured raw signal can be processed using Sensirion’s Gas Index Algorithm to provide an easy-to-understand air-quality index for monitoring and control systems. SGP40 provides VOC-based air-quality sensing, while SGP41 adds a separate NOx sensing channel along with VOC measurement. This makes the SGP41 suitable for applications such as air purifiers, ventilation systems, smart-home devices and indoor air-quality monitoring.

Note-:

1) Temperature and humidity values can be supplied externally for compensation; the SGP41 does not measure temperature, humidity, or pressure.

2) When powered through VIN, the 3V3 pin provides a regulated 3.3V output up to 50mA. Alternatively, the board can be powered directly by supplying a regulated 3.3V to the 3V3 pin.

Features:

• Digital VOC Air Quality Sensor for monitoring indoor air pollution levels.

• Based on Sensirion SGP4x gas sensing technology for reliable measurements.

• Provides VOC index output for easy air quality evaluation.

• Simple I²C interface for easy integration with embedded systems.

• Built-in signal processing and humidity compensation for stable readings.

• Compact module suitable for smart home, HVAC, IoT, and environmental monitoring applications.

Includes

1x SGP41 sensor breakout (ES-12288)

1x Pinheader of pitch 2.54mm

Note-: Qwiic connector cable are not provided

Resources

SGP4x Datasheet

DXF Files

STEP Files

Github link for arduino library

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