Looking for a simple way to monitor both environmental conditions and indoor air quality without wiring multiple sensor modules together? The 7Semi SHT40 + SGP40 VOC Air Quality Sensor Breakout combines two proven Sensirion sensors onto a single compact board, giving you access to accurate temperature, humidity, and VOC measurements through a single I²C interface. Whether you're building a smart home device, indoor air quality monitor, HVAC controller, or an environmental data logger, this breakout provides the essential information needed to understand the air around you.
At the heart of the board is the SHT40, a high-accuracy digital temperature and humidity sensor known for its excellent long-term stability and low power consumption. Working alongside it is the SGP40, a dedicated VOC sensor designed to detect volatile organic compounds commonly generated by cleaning products, paints, furniture, cooking activities, and human occupancy. Together, these sensors provide a more complete picture of indoor environmental conditions than temperature or humidity measurements alone.
What makes this combination particularly useful is that the SGP40 uses real-time temperature and humidity data from the SHT40 for humidity compensation, helping deliver more reliable VOC measurements under changing environmental conditions. With built-in Qwiic-compatible connectors, standard I²C communication, and a compact breakout format, the module is ideal for rapid prototyping as well as long-term deployment in air quality monitoring systems, IoT devices, smart appliances, and environmental sensing projects.
Features
• Combines the Sensirion SHT40 temperature and humidity sensor with the SGP40 VOC air quality sensor on a single compact breakout board.
• Measures ambient temperature and relative humidity with excellent accuracy and long-term stability for environmental monitoring applications.
• Detects volatile organic compounds (VOCs) commonly found in indoor environments, helping monitor air quality and occupant comfort.
• Uses real-time humidity and temperature compensation to improve VOC measurement accuracy under changing environmental conditions.
• Communicates through a standard I²C interface, making integration simple with Arduino, ESP32, STM32, Raspberry Pi, RP2040, and other embedded platforms.
• Includes Qwiic-compatible connectors for quick plug-and-play prototyping without soldering.
Package Includes
- 1 × 7Semi SHT40 + SGP40 VOC Air Quality Sensor Breakout
- 1 × Header Pin Strip
- Category of product:
- VOC Air quality sensor
- Communication interface:
- I2C
- Supply voltage:
- 3.3V
- VOC Index range:
- 1 to 500
- Operational temprature range:
- -20°C to +55°C
- Operational Humidity:
- 0 to 90% RH
- Dimension:
- L=25mm W=18mm H=4.72mm
- _3d_glb:
- https://7Semi.com/content/3d-files/10191.glb
- Temperature Accuracy:
- ±0.2°C Typical
- Humidity Accuracy:
- ±1.8% RH Typical
- Gas sensing:
- VOC Only
