JOY-IT DEBO SENS CCS811 Air Quality Sensor (CO2 & TVOC), I2C, 3.3-5V SEN-CCS811V1

Monitor indoor air quality in real time with the JOY-IT DEBO SENS CCS811 breakout board. Ideal for makers and IoT developers, this compact sensor measures equivalent CO2 (eCO2) and total volatile organic compounds (TVOC) using the AMS CCS811 digital gas sensor. Connect it to an Arduino, Raspberry Pi, or ESP32 via I2C and start logging air quality data in minutes. The onboard MCU handles raw signal processing, delivering calibrated output without complex coding.

Key specifications

• Sensor chip: AMS CCS811 digital gas sensor
• Measured parameters: Equivalent CO2 (eCO2) and TVOC
• eCO2 range: 400 – 8192 ppm
• TVOC range: 0 – 1187 ppb
• Interface: I2C (address 0x5A default, 0x5B alternate)
• Operating voltage: 3.3 V – 5 V DC
• Current consumption: ~30 mA active, ~1.5 mA idle
• Operating temperature: -40 °C to +85 °C (sensor chip)
• Humidity range: 10 % – 95 % RH (non-condensing)
• Pinout: VCC, GND, SDA, SCL, WAK, INT, nRESET, ADD
• Automatic baseline correction for stable readings

Why choose it

The CCS811 delivers accurate, factory-calibrated air quality data without the need for external signal conditioning. Its low power consumption makes it suitable for battery-powered projects, while the wide supply voltage range ensures compatibility with both 3.3 V and 5 V systems. The breakout form factor simplifies prototyping, and the I2C interface allows easy integration with popular development platforms.

Ideal use cases

• Indoor air quality monitoring stations
• Smart home ventilation control
• IoT environmental sensing
• HVAC system feedback
• Portable air quality loggers

Good to know

The sensor requires a burn-in period of 48 hours for stable readings, and it performs automatic baseline correction over time. For best accuracy, operate within the recommended humidity range and avoid exposure to high concentrations of siloxanes. The WAK pin can be used to wake the sensor from low-power sleep mode, and the INT pin provides a data-ready interrupt.