ChipScout

Comparison page

MQ-135 vs ACS712

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-135

Projects needing Air quality and Gas with a commonly available sensors part.

ACS712

Projects needing Current and Hall effect with a commonly available sensors part.

Specification Matrix

DimensionMQ-135ACS712
CategorySensorsSensors
MakerWinsenAllegro MicroSystems
CoreNot specifiedNot specified
ClockNot specifiedNot specified
WirelessNot specifiedNot specified
Voltage3.3V3.3V
LibrariesArduinoArduino
Price$0.80 - $2.50$1.00 - $3.00

Known Tradeoffs

MQ-135

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

ACS712

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

Open Individual Model Pages

MQ-135

Winsen

Low-cost gas sensor module often marketed for air quality experiments.

China-madeSensors66% confidence

ACS712

Allegro MicroSystems

Hall-effect current sensor module used for AC/DC current measurement projects.

China-madeSensors76% confidence