Name: MQ9 Gas Sensor Module
Brand: Oxymora
SKU: OM0052
Availability: InStock

MQ9 Gas Sensor Module

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The MQ9 Gas Sensor Module is designed to detect carbon monoxide (CO) and combustible gases such as LPG, methane, and propane. It features both analog and digital outputs for gas concentration monitoring and alarm-based safety systems.

SKU: OM0052

Brand: Oxymora

Product details

The MQ9 Gas Sensor Module is a versatile semiconductor-based gas detection device optimized for sensing carbon monoxide and various combustible gases. The core sensing element contains a tin dioxide (SnO₂) layer that changes resistance depending on the concentration of target gases, enabling measurement of gas levels with high sensitivity.

The module includes both an analog output for precise concentration monitoring and a digital output driven by an onboard LM393 comparator. An adjustable potentiometer allows threshold configuration for digital triggering. Operating at 5V DC, the MQ9 supports rapid response, wide detection range, and stable performance, making it suitable for safety-critical applications such as leakage alarms, industrial gas monitoring, and smart IoT systems.

Specifications

Detected GasesCarbon Monoxide (CO), LPG, Methane (CH4), Propane
Operating Voltage5V DC
Output TypeAnalog (AO) & Digital (DO)
Detection Range 10 – 10,000 ppm (approx.)
Sensor TypeSemiconductor
Sensitivity AdjustmentPotentiometer
Comparator ICLM393
Warm-up Time20 – 30 seconds
Operating Temperature−10°C to +50°C
ApplicationsCarbon monoxide (CO) leakage detection systems , LPG, methane, and propane gas leak alarms , Automotive exhaust and cabin gas monitoring