Available 2026
SFA40
Miniature, low power consumption formaldehyde sensor for indoor air quality applications
SFA40 builds on the market success of its predecessor, SFA30, offering ultra-high selectivity to formaldehyde and long lifetime. It features unprecedented low power consumption and top performance – all in a miniature form factor. Engineered in Switzerland, it is designed for easy integration into air purifiers, indoor air quality monitors and air conditioners. All SFA40 sensors feature a digital I2C interface and are calibrated for accuracy at our manufacturing facility in Switzerland.
Specification
| Formaldehyde | |||
|---|---|---|---|
| Measurement range0 - 2000ppb | 0 - 2000 | ppb | |
| Accuracy±20 ppb or ±20% m.v. | ±20 ppb or ±20% m.v. | ||
| Sensor outputFormaldehyde concentration in ppb | Formaldehyde concentration in ppb | ||
| Cross sensitivity to ethanol< 0.3% | < 0.3 | % |
