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MQ-9 Gas Sensor Module, Carbon Monoxide & Combustible Gas Detector, 5V Alarm Model

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Ensure safety and peace of mind in your home or workplace with the MQ-9 Gas Sensor for Carbon Monoxide and Flammable Gas Detection, Alarm Model, featuring a compact size and low 5V operating voltage. This advanced sensor belongs to the renowned MQ family of gas sensors, recognized for their reliability and accuracy in detecting harmful gases such as Carbon Monoxide, Methane, Propane, LPG, and Hydrogen. **Product Overview:** The MQ-9 sensor is an ideal choice for both smart home and industrial safety systems, thanks to its small size, easy installation, and compatibility with microcontrollers like Arduino. Manufactured by a trusted brand in precision electronics, it delivers stable performance and high build quality. Originating from China, this sensor is perfectly suited for use in kitchens, laboratories, offices, factories, and for gas leak detection in residential or industrial pipelines. **Technical Specifications:** - Operating Voltage: 5V - Heater Consumption: ≤350mW - Analog Output Voltage: 0V to 5V - Digital Output Voltage: 0V or 5V (adjustable via onboard potentiometer) - Long lifespan and cost-effective - Sensitive to a wide range of gases: Carbon Monoxide, Methane, Propane, LPG, and Hydrogen - Sensing element: Aluminum-oxide-based ceramic coated with Tin Dioxide (SnO₂), protected by a stainless steel mesh **Key Features:** - Immediate and precise detection of dangerous gas leaks - Compact size for easy installation in tight spaces - Adjustable sensitivity via onboard potentiometer to suit your specific needs - LED indicators show power status and gas presence - Effortless integration with alarm systems or electronic projects **Use Cases:** - Gas leak alarm systems in homes and kitchens - Offices and commercial buildings - Factories and gas production lines - Laboratories and educational facilities - Arduino and Raspberry Pi engineering and educational projects **Benefits:** - Protects lives and property from the dangers of Carbon Monoxide and flammable gas leaks - Provides continuous, efficient indoor air monitoring - Economical with long service life and reliable performance **Care Instructions:** - Allow an initial preheating period (2–5 minutes) before use to ensure accurate readings - Periodically clean the exterior to remove dust - Avoid exposing the sensor to high humidity or harsh chemicals - Ensure correct voltage supply (maximum 5V) to maintain optimal performance Choose the MQ-9 Gas Sensor for unparalleled safety in your home or business, and invest in peace of mind today.

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Country of Origin: China
Dimensions: Small size
Model: MQ-9
Sensor Type: Metal Oxide Semiconductor (MOS)
Operating Voltage: 5V
Heater Consumption: ≤350mW
Analog Output: 0 to 5V
Digital Output: 0 or 5V (adjustable via potentiometer)
Lifespan: Long
Cost: Low
Detectable Gases: Carbon Monoxide, Methane, Propane, Liquefied Petroleum Gas (LPG), Hydrogen
Sensing Element: Ceramic coated with Tin Dioxide (SnO₂), enclosed in stainless steel mesh
Preheating Time: 2-5 minutes
LED Indicator: Yes (lights up during operation or gas detection)
Adjustable Sensitivity: Yes (via potentiometer)

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