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Home / Computer Hardware, Monitors & Peripherals / SCD40 SCD41 Gas Sensor Module for CO2 Detection with Integrated Temperature and Humidity via I2C

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Interface Type I²C
Supply Voltage 2.4V to 5.5V
CO2 Measurement Range 400 to 5000 ppm
CO2 Accuracy ±(40 ppm + 5% mv)
Temperature Range -10°C to 60°C
Humidity Range 0% to 100% RH
Package Dimensions 10.1 x 10.1 x 6.5 mm
I2C Clock Frequency Up to 400 kHz
Average Current Consumption 14 mA
Pin Configuration 6-Pin LGA

5 reviews

A

Anonymous

Apr 07, 2026

Rating: 5/5

Low Power Draw

Great for battery projects. Stable output and efficient energy usage.

A

Anonymous

Apr 07, 2026

Rating: 4/5

Good Sensor

Works well for my project but needs careful soldering due to small pins.

A

Anonymous

Mar 31, 2026

Rating: 5/5

Perfect for Home Automation

Integrated easily with Home Assistant. Readings seem consistent and stable over time.

A

Anonymous

Jan 21, 2026

Rating: 3/5

Pinout Confusing

Works fine once wired correctly. The diagram could be clearer for beginners.

A

Anonymous

Jan 20, 2026

Rating: 5/5

Accurate Readings

Compared with professional meter. Very close results on CO2 and temperature.

5 FAQ

Q: Is 3.3V logic supported?

A: Yes, voltage range covers 3.3V systems comfortably.

Q: Outdoor enclosure okay?

A: Yes, if within temperature and humidity specifications.

Q: Library available?

A: Many open source libraries exist for Arduino and ESP32.

Q: Can I reset the sensor?

A: Yes, via specific I2C command sequence found in datasheet.

Q: Does it need warm-up?

A: Minimal warm-up time required for stability after power on.

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