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Measure Temperature with a Sensor Made for Embedded Builds
The CCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor is a temperature and humidity sensor with i2c designed for climate logging, weather nodes, and room monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Power supply: 3.3V; Interface: I2C; Relative humidity accuracy: + 2% (typical).
Important: Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.
Why you’ll love it
- Excellent stability under high humidity: Excellent stability under high humidity
- Power range: 3.3V
- Current draw: 100nA
- Expected accuracy: + 2% (typical)
- Compact size: 15x21mm
- Useful spec: electronic components
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| CCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor | temperature and humidity sensor with I2C | Current item |
| Adafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT | environmental sensor with I2C | STEMMA QT connector, Qwiic connector |
| Air Quality Sensor Breakout VOC and eCO2 CCS811 | gas sensor with I2C | I2C interface, gas detection |
| Carbon Monoxide Analog Sensor MQ7 For Arduino | gas sensor with analog output | analog output, gas detection |
What you can build
This sensor is a good fit for weather stations, room monitors, greenhouses, incubators, and climate data loggers.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus an I2C cable or jumper wires for quick setup and testing.
Recommended add-ons
Useful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.
Technical specifications
| Product | CCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor |
|---|---|
| Power supply | 3.3V |
| Sleep mode current | 100nA |
| Relative humidity accuracy | + 2% (typical) |
| Temperature accuracy | + 0.2 C (typical value) |
| Size | 15x21mm |
| Material | electronic components |
| Interface | I2C |
Wiring & usage notes
Connect VCC, GND, SDA, and SCL to your controller. Use the correct board voltage and I2C address in your code. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.
What’s in the box
1 × CCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor
Frequently Asked Questions
What does the CCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor measure?
It is designed to measure temperature and humidity.
Can I use it with Arduino, ESP32, or Raspberry Pi?
Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this I2C sensor?
This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.
Does it need calibration?
Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.
Is it good for prototyping?
Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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