NG # 09440010-HW-SENSIRION-010
SFA40 Formaldehyde Sensor is a miniature, low-power formaldehyde sensor designed for indoor air-quality applications. It provides highly selective formaldehyde detection, long-term stability, and low energy consumption in a compact package, making it suitable for air purifiers, indoor air-quality monitors, air conditioners, and smart home devices.
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Get A QuoteThe Sensirion SFA40 provides accurate formaldehyde measurement across 0–2000 ppb, with an accuracy of ±20 ppb or ±20% of the measured value and cross-sensitivity to ethanol below 0.3%. Its factory-calibrated digital I²C interface, ultra-low average supply current of 80 µA, and compact 13 × 10 × 2.4 mm form factor enable easy integration into space-constrained products. The sensor operates from 1.8–3.6 V and is designed for reliable long-term indoor air-quality monitoring.
Type: Formaldehyde Sensor
Measurement Range: 0–2000 ppb
Accuracy: ±20 ppb or ±20% m.v.
Sensor Output: Formaldehyde concentration in ppb
Cross Sensitivity to Ethanol: <0.3%
Supply Voltage: 1.8–3.6 V
Average Supply Current: 80 µA
Max. Supply Current: 2 mA
Interface: I²C
Dimensions: 13 × 10 × 2.4 mm
Applications: Indoor Air Quality, Air Purifiers, Air Conditioners
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