SmartElex SGP40 Air Quality Sensor Breakout | I2C VOC Sensor

SmartElex SGP40 Air Quality Sensor Breakout | I2C VOC Sensor Module

The SmartElex SGP40 Air Quality Sensor Breakout is based on the Sensirion SGP40 digital VOC sensor for monitoring volatile organic compounds in indoor environments. It uses a metal-oxide (MOx) sensing element with a temperature-controlled micro-hotplate and provides digital data through an I2C interface.

The sensor provides a raw VOC signal that can be processed using Sensirion’s Gas Index Algorithm to generate a VOC Index from 1–500. It also supports on-chip humidity compensation when humidity data is provided, making it suitable for indoor air-quality monitoring, air purifiers, ventilation systems, IoT devices and environmental sensing projects.

Features

• SGP40 VOC Sensor: Uses the Sensirion SGP40 digital gas sensor for detecting volatile organic compounds in indoor environments.
• Indoor Air Quality Monitoring: Designed to monitor changes in VOC levels and provide an indication of indoor air quality.
• VOC Index: The sensor's raw VOC signal can be processed using the Sensirion Gas Index Algorithm to generate a VOC Index from 1 to 500.
• I2C Interface: Provides a digital I2C interface for convenient communication with microcontrollers and development boards.
• Humidity Compensation: Supports humidity-compensated VOC measurements when humidity information is supplied to the sensor.
• Fast Response: Offers a typical VOC response time of less than 10 seconds under specified test conditions.
• Low Power Consumption: Operates with an average supply current of approximately 2.6mA, making it suitable for low-power embedded applications.
• Wide Supply Range: The SGP40 sensor supports a 1.7–3.6V supply voltage range.
• Compact Sensor: Uses a highly compact sensing element suitable for space-constrained air-quality monitoring devices.
• Wide Applications: Suitable for air-quality monitors, air purifiers, ventilation systems, IoT devices, environmental monitoring and smart-home projects.