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The product is intended for specialists and requires qualified and authorized personnel. The product does not include assembly/use instructions . Putting the product into operation by unqualified persons leads to the loss of the warranty according to the Terms and Conditions on the site.
The specified technical parameters (current, power, etc.) represent maximum allowable values under ideal operating conditions. For safe use and optimal lifespan, it is recommended to operate the product continuously at no more than 50% of the specified maximum values.
SGP41 air quality sensor module, VOC and NOx, I2C, 1.6V
Compact module for real-time air quality monitoring, detects VOC and NOx with Sensirion MOX technology, I2C communication for quick integration with Arduino, ESP32, Raspberry Pi or STM32, operates at low voltage 1.62-1.98V ideal for battery-powered devices, suitable for smart home, HVAC, purifiers and portable weather stations.
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Module based on the SGP41 sensor, designed for measuring air quality, compatible with Arduino and other development boards, used in smart home applications, HVAC, air purifiers or portable weather stations.
The sensor uses Sensirion's integrated MOX (metal oxide) technology to detect VOC (volatile organic compounds) and NOx (nitrogen oxide) gases, providing an accurate assessment of air quality in real time.
The module is mounted on a black board with a standard I2C interface, making it easy to integrate onto boards such as Arduino, ESP32, Raspberry Pi or STM32. It operates at low voltages between 1.62V and 1.98V, making it suitable for portable applications and battery-powered devices.
Attention! The sensor is not compatible with logic levels and power supply higher than 1.9VDC! Use a logic level converter and power supply of 1.8VDC!
Specifications:
Supply voltage: 1.62 – 1.98 VDC
Sensor type: SGP41 (Sensirion)
Measured parameters: VOC and NOx
Interface: I2C (standard address 0x59)
Typical current: < 2 mA in active mode
Warm-up time: < 10 s
Module size: 10 × 10 mm
Board material: FR4, black PCB
Pinout:
| Pine | Name | Function | Description |
|---|---|---|---|
| 1 | VCC | feeding | 1.62V – 1.98V |
| 2 | GND | Mass | Common reference |
| 3 | SDA | I²C data | Bidirectional data line |
| 4 | SCL | I²C clock | Communication synchronization |
Use:
Connect the sensor to the microcontroller via the I2C bus:
VCC → 1.8 V
GND → GND common
SDA → I²C SDA pin
SCL → I²C SCL pin
Initializes communication at address 0x59.
Start the heating and VOC/NOx reading routine according to the Sensirion library (available for Arduino and Raspberry Pi).
Interpret the returned values:
VOC Index (0–500)
NOx Index (0–500)
Low values indicate clean air. High values indicate polluted air.
Attention! The sensor is not compatible with logic levels and power supply higher than 1.9VDC! Use a logic level converter and power supply of 1.8VDC!
Example of connection with Arduino and logic level converter:
| Arduino UNO | Level conversion mode | SGP41 |
|---|---|---|
| 5V | HV | – |
| GND | GND | GND |
| SDA (A4) | HV1 → LV1 | SDA |
| SCL (A5) | HV2 → LV2 | SCL |
| LV (low side) | – | 1.8V |
| HV (high side) | – | 5V |
| 1.8V LDO OUT | – | VCC |
Produs destinat utilizarii in proiecte electronice, automatizari, prototipare, educatie si cercetare.
Produsul trebuie utilizat numai conform specificatiilor tehnice mentionate in descriere si/sau in documentatia produsului.
Avertismente generale de siguranta:
Nu utilizati produsul la tensiuni, curenti sau temperaturi peste valorile specificate.
Montajul si conectarea trebuie realizate de persoane cu cunostinte tehnice minime in domeniul electric/electronic.
Evitati scurtcircuitele, inversarea polaritatii si conectarea gresita a alimentarii.
Nu lasati produsul alimentat nesupravegheat in timpul testelor.
Produsul nu este jucarie si nu este destinat copiilor.
Pentru modulele electronice, se recomanda utilizarea in carcase, panouri sau montaje protejate, dupa caz.
Identificare produs:
Denumirea produsului, codul/SKU-ul si caracteristicile tehnice sunt mentionate in pagina produsului si/sau pe eticheta ambalajului.
Producator / Importator / Distribuitor:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Website: www.sigmanortec.ro
Persoana responsabila in UE:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Documentatie si siguranta:
Pentru informatii suplimentare, fise tehnice, declaratii de conformitate sau instructiuni, ne puteti contacta la [email protected].
