Gravity: SFA40 Formaldehyde (HCHO) Sensor (0-1000ppb, ±20ppb Accuracy)
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Description
The Gravity SFA40 Formaldehyde Sensor is an electrochemical HCHO detection module designed for precise indoor air quality monitoring. Featuring integrated environmental compensation and an easy-to-use digital interface, it suits students, makers, and educators building smart ventilation or environmental sensing projects.
Electrochemical formaldehyde detection
The module uses an SFA40 electrochemical sensor designed specifically for air monitoring systems. It delivers reliable detection of ambient HCHO levels in domestic and laboratory environments.
High precision measurement range
This sensor operates across an effective measurement range of 0 to 1000ppb. It delivers sensitive tracking with an accuracy rating of ±20ppb for dependable low-concentration readings.
Built-in SHT4x compensation
The onboard SHT4x sensor provides active environmental compensation to maintain reading stability. This helps minimise drift caused by ambient temperature and humidity shifts.
Standard I2C interface
The sensor communicates via a digital I2C interface for straightforward wiring and microcontroller integration. It is fully compatible with standard Gravity microcontroller expansion setups.
Downloads & documentation
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