Product Description
The DFRobot Gravity: SGP40 Air Quality Sensor is a compact VOC sensor module for indoor air quality evaluation. It is based on the Sensirion SGP40 and uses a digital sensor architecture with a temperature-controlled micro-hotplate and a humidity-compensated air quality signal.
The module communicates via I2C and operates from 3.3 V to 5 V. In combination with Sensirion’s VOC algorithm, the sensor signal can be used directly for air quality evaluation. The specified VOC index is derived from the detected ethanol equivalent in air. With a low operating current of 2.6 mA, a response time of 2 s, and a preheat time of 10 s, the module is suitable for long-term indoor monitoring applications.
Technical Features
- Sensor element: Sensirion SGP40
- Product type: VOC sensor module with Gravity interface
- Interface: I2C
- I2C address: 0x59
- Supply voltage: 3.3 V to 5 V
- Operating current: 2.6 mA
- Preheat time: 10 s
- Response time: 2 s
- VOC index: 0 to 500
- Measuring range: 0 to 1000 ppm (ethanol equivalent)
- Operating temperature range: -10 °C to 50 °C
- Operating humidity range: 0 %RH to 90 %RH
- Dimensions: 20 × 22 mm
Application Areas
The module is intended for indoor projects where volatile organic compounds are monitored as an indicator of air quality. Typical uses include retrofitting or custom development for air purifiers, kitchen hoods, ventilation monitoring, and general environmental sensing in embedded systems. The I2C interface and compact form factor support integration into microcontroller-based long-duration applications.
What's Included
- Gravity: SGP40 Air Quality Sensor x1
- Gravity-4P I2C/UART Sensor Cable x
| Item information | Value |
|---|---|
| GTIN: | 4060137012266 |
| HAN: | SEN0394 |
| Category: | Gas Sensor |
| Abmessungen (mm): | 20 × 22 mm |
| Min Supply Voltage: | 3.3 |
| Max Supply Voltage: | 5 |
| Application Interface: | I2C |
| Operating Current: | 2.6 |
| Sensor IC Model: | Sensirion SGP40 |
| Output Metric: | VOC index |
| VOC Index Range: | 0-500 |
| I2C Address: | 0x59 |
| Preheat Time: | 10 |
| Shipping weight: | 0,02 kg |
| Item weight: | 0,02 kg |
| Dimensions ( Length × Width ): | 2,20 × 2,00 cm |
DFRobot, Room 602, 603, No. 2 Boyun Road, Zhangjiang Hi-Tech Park, China (Shanghai) Pilot Free Trade Zone, 201210 shanghai, China, https://eckstein-shop.de/DFRobot-Marken