Comparison page

MQ-2 vs SCD30

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

MQ-2

Projects needing Gas and Analog with a commonly available sensors part.

SCD30

Projects needing CO2 and Humidity with a commonly available sensors part.

Specification Matrix

DimensionMQ-2 SCD30

CategorySensorsSensors

MakerWinsenSensirion

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoArduino

Price$0.80 - $2.50$35.00 - $60.00

Known Tradeoffs

MQ-2

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

SCD30

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

MQ-2

Winsen

Low-cost combustible gas sensor module frequently used in beginner gas detection demos.

China-madeSensors68% confidence

SCD30

Sensirion

CO2, temperature, and humidity module used for higher-quality indoor air monitoring.

China-madeSensors86% confidence