Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	CCS811 (Gas) + HDC1080 (Temp/Humidity)
Detection Range	400 to 5000 ppm CO2 equivalent
Interface	I2C Communication Protocol
Operating Voltage	3.3V DC
Temperature Range	-40°C to +85°C
Humidity Range	0% to 100% RH
Response Time	Approx. 60 seconds for stabilization
Board Dimensions	24mm x 18mm x 3mm
Mounting Style	Through-hole with header pins
Compatibility	Arduino, Raspberry Pi, ESP32, STM32

6 reviews

Anonymous

Mar 28, 2026

Rating: 4/5

Easy to integrate

Found plenty of example code online to get started quickly. Only giving 4 stars because the initial burn-in time is quite long before accurate readings appear.

Anonymous

Mar 21, 2026

Rating: 5/5

Ideal for environmental monitoring

Using this to monitor air quality in my indoor garden. The combination of gas, temp, and humidity in one module saves so much wiring hassle.

Anonymous

Mar 16, 2026

Rating: 5/5

Compact and reliable

Great little board. The footprint is small enough to fit into tight enclosures. No issues with noise on the I2C line even with long wires.

Anonymous

Mar 13, 2026

Rating: 5/5

Excellent value for money

Compared to other standalone sensors, getting both CCS811 and HDC1080 on one board at this price point is a steal. Highly recommended for students.

Anonymous

Mar 06, 2026

Rating: 5/5

Perfect for my smart home project

This module works flawlessly with my ESP32. The I2C address is standard and the library support is excellent. Readings are stable after the initial warm-up period.

Anonymous

Mar 05, 2026

Rating: 4/5

Good accuracy, needs calibration time

The sensor provides consistent data once it has run for about 24 hours as recommended in the datasheet. Temperature and humidity readings match my reference meter closely.

5 FAQ

Q: Can this detect actual Carbon Monoxide (CO) or just CO2 equivalents?

A: The CCS811 detects Total Volatile Organic Compounds (TVOCs) and estimates CO2 equivalents. It is not a dedicated safety sensor for toxic Carbon Monoxide (CO) leaks.

Q: How long does the sensor need to run before providing accurate data?

A: The CCS811 sensor typically requires a 48-hour burn-in period upon first use. After that, it needs about 10-20 minutes of warm-up each time it is powered on for optimal accuracy.

Q: What is the default I2C address for this board?

A: The default I2C address for the CCS811 is usually 0x5A, and the HDC1080 is typically 0x40. Please check the specific library documentation you are using.

Q: Is 5V logic compatible or do I need a level shifter?

A: The module operates at 3.3V. If your microcontroller uses 5V logic, you must use a logic level shifter to prevent damaging the sensor.

Q: Does this module require an external pull-up resistor for I2C lines?

A: Yes, the board includes onboard pull-up resistors, so you can connect it directly to your microcontroller without additional components.

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