Description Seeed Studio Grove Formaldehyde Sensor (SFA30) is a Grove-ready formaldehyde sensor built around the Sensirion SFA30 for accurate indoor HCHO monitoring. It is designed for low cross-sensitivity to ethanol and other interfering gases, and it also uses Sensirion SHT40 temperature and humidity data for compensation. With I2C/UART support and a 3.3V or 5V supply range, this HCHO sensor is suitable for indoor air quality monitors, smart ventilation nodes, air purifier controllers, and environmental data loggers. Features Sensirion SFA30 sensor for dedicated formaldehyde concentration measurement. 0 to 1000 ppb HCHO measurement range with a limit of detection below 20 ppb. Typical formaldehyde accuracy of ±20 ppb or ±20% of the measured value. Low cross-sensitivity to ethanol and common interfering gases. Integrated Sensirion SHT40 temperature and humidity sensing for compensation. I2C and UART support selectable on the module. Grove connector for fast prototyping with compatible Arduino and Raspberry Pi Grove hardware. Designed for long service life, up to 6 years under suitable operating conditions. Applications Real-time indoor formaldehyde concentration monitoring. Indoor air quality monitors for homes, offices, classrooms, and renovation spaces. Air purifier, air conditioner, air exchanger, and ventilation control prototypes. Environmental sensing nodes that log HCHO, temperature, and humidity data. Specifications Parameter Value Formaldehyde sensor Sensirion SFA30 Temperature and humidity sensor Sensirion SHT40 Measured outputs Formaldehyde concentration, relative humidity, temperature Formaldehyde measurement range 0 to 1000 ppb Typical formaldehyde accuracy ±20 ppb or ±20% of measured value Repeatability ±15 ppb or 15% of measured value Response time < 2 minutes Limit of detection < 20 ppb Supply voltage 3.3V or 5V Interface I2C / UART Connector 4-pin Grove Service life Up to 6 years Part List Item Quantity Grove Formaldehyde Sensor (SFA30) 1 5 Pins Header 1 Other Content The onboard interface selection switch lets the same module fit both I2C and UART projects. The Wiki hardware overview identifies the power LED, Grove connector, 5V pins, 3.3V pins, and interface selection switch. For Arduino-class boards, the Grove connection can be used with Base Shield V2 and the Sensirion I2C SFA3X Arduino library. For Raspberry Pi projects, the module can be connected through Grove Base Hat hardware for compact indoor air quality monitoring builds. Resources Seeed Studio Grove Formaldehyde Sensor (SFA30) Wiki Sensirion SFA30 Product Overview Sensirion SFA30 Datasheet Sensirion I2C SFA3X Arduino Library Seeed Studio Base Shield V2 Wiki Seeed Studio Grove Base Hat for Raspberry Pi Wiki FAQ What does this formaldehyde sensor measure?It measures HCHO concentration and also reports temperature and humidity data for compensation. Is it a dedicated HCHO sensor or a general VOC sensor?It is a dedicated HCHO sensor based on the Sensirion SFA30, so it is intended for formaldehyde-focused air quality projects rather than generic TVOC-only detection. Can it work with both 3.3V and 5V systems?Yes. The documented supply voltage range is 3.3V or 5V. Which interface should I use?The module supports I2C and UART. Use the onboard interface selection switch to match the communication method required by your controller.
Related
Related
Related
Related