Gravity: MQ9 Gas Sensor - CO & Combustible Gas Detector

The Gravity MQ9 sensor provides reliable detection of carbon monoxide and combustible gases through advanced thermal cycling technology - essential for home safety and industrial monitoring.

Dual-Temperature Detection

Precisely measures CO at low temperature (1.5V) and combustible gases (methane/propane) at high temperature (5V) through controlled thermal cycling.

Wide Detection Range

Accurately detects 10-1000ppm CO and 100-10000ppm combustible gases - covering both safety thresholds and industrial concentration levels.

Gravity Plug-and-Play

Standard 3-pin connector eliminates complex wiring - directly compatible with Arduino and other microcontrollers via analog input.

Adjustable Sensitivity

Built-in potentiometer allows fine-tuning for specific environmental conditions and detection priorities.

To ease the difficulty of using this sensor,  a Gravity Interface is adapted to allow plug&play.  The Arduino IO expansion shield is the best match for this senor connecting to your Arduino microcontroller.