SKU: SEN0392
The Sensirion SGP40 VOC sensor (next-gen of SGP30) offers long-term stable supply (10-year plan), ultra-low power (avg 2.6mA/3.3V), fast start (<60s), and no calibration. Its algorithm processes raw signals into a 0-500 air quality index, reflecting indoor VOC changes like a human nose. Compact, it suits long-term indoor projects (air purifiers, kitchen hoods) and includes C/Python libraries for various controllers.
Downloadable Resources
1. Example Code for Arduino - Read VOC Index
Serial print the current VOC index after the sensor is powered on for 10s. The chip has on-chip compensation, so users can use it without calibration. If you need to get a more accurate value, you can open the setrht() function and fill in the RH% of the ambient relative humidity value obtained by the external humidity detection sensor and the ° C of the ambient temperature detected by the temperature sensor.
2. Example Code for Raspberry Pi - Read VOC Index
Print the VOC index once every 1 second.
Reference
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