1 / 4 · Click to enlarge
DFRobot Gravity: SFA40 HCHO Sensor (0–1000 ppb Wide Range, High Accuracy ±20 ppb)
The DFRobot Gravity: SFA40 HCHO Sensor (0–1000 ppb Wide Range, High Accuracy ±20 ppb) by DFRobot is a premium gas sensors designed for premium buyers. It features Item Type: Gas Sensor and Model No. / Name: SFA40.
Available Offers
Free Delivery on this order. No minimum order value.
15-Day Easy Returns — hassle-free return & full refund.
Secure Payment — 100% safe checkout with UPI, Cards & Net Banking.
Available Offers
5% Cashback
Pay with UPI & get 5% cashback (up to ₹50) via Razorpay
No-Cost EMI
Available on select bank cards at checkout. 0% interest for 3 months.
Free Shipping
Free delivery on all orders. No minimum order value.
Cash on Delivery
COD available on orders up to ₹5,000 across India.
Quick Specs
Ideal For
About This Product
The DFRobot Gravity: SFA40 HCHO Sensor (0–1000 ppb Wide Range, High Accuracy ±20 ppb) by DFRobot is a premium gas sensors designed for premium buyers. It delivers reliable performance at an accessible price.
Key Specifications
- Item Type: Gas Sensor
- Model No. / Name: SFA40
- Operating Voltage (V): 3.3 – 5.5 V — works with standard household power
- Current consumption: 0.08
- Detection Gas: Formaldehyde (HCHO)
- Measurement Range: 0–1000 ppb — reliable connection even at a distance
- Accuracy: ±20 ppb
- Interface: I2C (Gravity) — compatible with modern devices
Why Buy from Elecvora?
Elecvora sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.
The DFRobot Gravity: SFA40 HCHO Sensor is a high-precision electrochemical module designed for accurate formaldehyde (HCHO) monitoring in indoor environments. Built around the industry-trusted Sensirion SFA40 chip, this sensor delivers reliable measurements across a 0–1000 ppb range with a low detection threshold of 20 ppb and an accuracy of ±20 ppb.
Unlike conventional gas sensors that react to common household smells, this module features an anti-interference electrochemical design that minimizes false alarms from alcohol or perfumes. An integrated SHT4x temperature and humidity sensor automatically compensates for environmental changes, ensuring stable readings in real-world conditions.
With its Gravity I2C plug-and-play interface, the sensor integrates easily with Arduino and other microcontroller platforms. It is ideal for smart home air quality systems, automated ventilation, air purifiers, and portable health monitoring devices where dependable formaldehyde detection is essential.
Advanced Electrochemical Principle for Specific HCHO Detection
Features:
- High-accuracy formaldehyde detection with ±20 ppb error
- Wide measurement range from 0 to 1000 ppb
- Ultra-low detection threshold of 20 ppb
- Electrochemical sensing for specific HCHO detection
- Extremely low ethanol cross-sensitivity (<0.3%)
- Integrated temperature & humidity compensation (SHT4x)
- Real-time output of HCHO, temperature, and humidity
- Gravity I2C interface for easy Arduino integration
Package Includes:
1 x DFRobot Gravity: SFA40 HCHO Sensor
1 x Gravity 4pin sensor cable
