MQ-9 Carbon Monoxide & Flammable Gas Sensor Module

MQ-9 gas sensor is SnO2, which has lower conductivity in clean air. It makes detection by cycling high and low temperature and detects CO when low temperature (heated by 1.5V). The sensor’s conductivity is higher along with the gas concentration rising. Detects Methane, Propane, combustible gas, etc.

$7.95

Out of stock

Qty Discount
4 - 9 5%
10 + 8%
SKU: OKY3336-3
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Additional information
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Specifications:

MQ-9 Carbon Monoxide & Flammable Gas Sensor Module

  • Working voltage: 5V DC
  • Chip: LM393, ZYMQ-9 Carbon Monoxide & Flammable Gas
  • Interface: Analogue
  • Pin definition: 1 – Output, 2 – GND, 3 – VCC
  • Dual signal output: (Analog output and TTL level output)
  • Gas Detection: Carbon Monoxide & Flammable Gas
  • Fast response and high sensitivity

The Gas Sensor (MQ-9 Carbon Monoxide & Flammable Gas Sensor Module) is for detecting Carbon Monoxide & Flammable Gas, Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by using the potentiometer.

Gas Sensor Comparison
Sensor Detects Heater Voltage
MQ-2 Methane, Butane, LPG, smoke 5V
MQ-3 Alcohol, Ethanol, smoke 5V
MQ-4 Methane, CNG Gas 5V
MQ-5 Natural gas, LPG 5V
MQ-6 LPG, butane gas 5V
MQ-7 Carbon Monoxide Alternating 5V and 1.4V
MQ-8 Hydrogen Gas 5V
MQ-9 Carbon Monoxide, flammable gasses. Alternating 5V and 1.4V
MQ131 Ozone 6V
MQ135 Air Quality (Benzene, Alcohol, smoke) 5V
MQ136 Hydrogen Sulfide gas 5V
MQ137 Ammonia 5V
MQ138 Benzene, Toluene, Alcohol, Acetone, Propane, Formaldehyde gas, Hydrogen 5V
MQ214 Methane, Natural gas 6V
MQ216 Natural gas, Coal gas 5V
MQ303A Alcohol, Ethanol, smoke 0.9V
MQ306A LPG, butane gas 0.9V
MQ307A Carbon Monoxide Alternating 0.2V and 0.9V.
MQ309A Carbon Monoxide, flammable gasses Alternating 0.2V and 0.9V
MG811 Carbon Dioxide (CO2) 6V
AQ-104 Air quality

Development  Resources: demo codes, schematics, datasheets, etc

MQ-135 Product Overview:

Can be used for home and factory gas leakage monitoring devices, suitable for liquefied petroleum gas, butane, propane, methane, smoke, ammonia, sulfide, benzene, etc.

MQ-2 Product Overview:

Can be used in homes and factories leakage monitoring device suitable for the detection of natural gas, hydrogen, butane, propane, methane, smoke,etc.

MQ-3 Product Overview:

Gas sensor sensitivity to alcohol can resist the interference of gasoline, smoke, water vapour. The sensor can detect a variety of alcohol concentration in the atmosphere

Can be used for on-site detection of motor vehicle drivers (breathalyzer), but also for detecting other places of ethanol vapour, alcohol detection range: detection range 10 ~ 1000ppm

MQ-4 Product Overview:

MQ-4 Methane gas sensor of high sensitivity, propane, butane and has good sensitivity. The sensor can detect a variety of combustible gases, especially natural gas.

Can be used in homes and factories leakage monitoring device, suitable for the detection of liquefied petroleum gas, butane, propane, methane, smoke and the like.

MQ-5 Product Overview:   

Main Chip: LM393, ZYMQ-5 gas sensor for liquefied petroleum gas (LPG), natural gas, city gas, best sensitivity.

Can be used for LPG detection, natural gas, coal gas monitoring device suitable for home or industrial. Excellent resistance to alcohol, smoke interference ability.

MQ-6 Product Overview:  

MQ-6 gas sensor for propane, butane, LPG high sensitivity, natural gas and has good sensitivity. The sensor can detect a variety of combustible gas, suitable for a variety of applications.

Suitable for home or industrial on LPG (liquefied petroleum gas), butane, propane, LNG (liquefied natural gas) detection devices. Excellent resistance to ethanol vapour, mist interference.

MQ-7 Product Overview:

High-low temperature cycling detection mode (1.5V heating) carbon monoxide detector, conductivity sensor with the increasing concentration of carbon monoxide gas in the air increases, high-temperature (5.0V heating) cleaning cryo-adsorption stray gases. Using a simple circuit to change the conductivity, the concentration of the gas is converted to the corresponding output signal. MQ-7 gas sensor has a high sensitivity for carbon monoxide, this sensor can detect a variety of gases containing carbon monoxide, is a low-cost sensor for a variety of applications.

Can be used for home and factory gas leakage monitoring devices, suitable for liquefied petroleum gas, butane, propane, methane, smoke, etc.

MQ-8 Product Overview:

MQ-8 hydrogen gas sensor of high sensitivity monitoring of other hydrogen-containing gases.

Suitable for home or industrial hydrogen leak monitoring devices. Can not interfere with ethanol vapour, soot, carbon monoxide and other gases.

MQ-9 Product Overview:  MQ-9 Carbon Monoxide & Flammable Gas Sensor Module     

High-low temperature cycling detection mode (1.5V heating) detecting carbon monoxide sensor’s conductivity increases with the air of carbon monoxide gas concentration increases, spurious adsorption at high temperature (5.0V heat) detection of combustible gases methane, propane, and cryogenic cleaning gas.  MQ-9 gas sensor for high carbon monoxide, methane, liquefied petroleum gas sensitivity, this sensor can detect a variety of carbon monoxide and combustible gas, is a low-cost sensor suitable for a variety of applications.

Reference for Arduino and reference to all matters.

Ardunio from Wikipedia

Notes:

1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual colour of the item because of different photographing light, angle and display monitor.

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See Support Items

Weight 0.0010 kg
Dimensions 3.2 × 2.2 × 2.7 cm


Product Applications



Current Product Support

SKU Product Type Download/View
OKY3336-3 MQ-9 Carbon Monoxide & Flammable Gas Sensor Module - Data Sheet Document Download

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