MQ-7 Carbon Monoxide Sensor Module
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.
Price range: $7.95 through $8.95
This item: MQ-7 Carbon Monoxide Sensor Module
Price range: $7.95 through $8.95
Price range: $7.95 through $8.95
Description
Additional information
Applications
Support & Utility
Q & A
The MQ-7 Carbon Monoxide (CO) Sensor Module is a popular gas sensor for detecting carbon monoxide (CO) gas in various applications, such as home safety systems, air quality monitoring, and industrial safety.
The MQ-7 sensor operates on the principle of a metal-oxide semiconductor (MOS) responding to gases such as carbon monoxide.
When CO gas contacts the sensor’s heated metal oxide surface, it alters the sensor material’s conductivity. This change is proportional to the concentration of CO in the air. The sensor’s resistance varies with CO concentration, and the output voltage changes accordingly.
Specifications: |
Version 1: Thin Long with round end
Version 2: Rectangle Red
Version 3: Blue or Black Rectangle
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Package Includes: |
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| Notes: |
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| Weight | 0.010 kg |
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| Dimensions | 3.2 × 2.2 × 1.9 cm |
| Model | Version 1, Version 2, Version 3 |
Product Applications
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 gases. | Alternating 5V and 1.4V |
| MQ131 | Ozone | 6V |
| MQ135 | Air Quality (Benzene, Alcohol, smoke) | 5V |
| MQ136 | Hydrogen sulphide 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 gases | Alternating 0.2V and 0.9V |
| MG811 | Carbon Dioxide (CO2) | 6V |
| AQ-104 | Air quality | – |
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, sulphide, benzene, etc.
MQ-2 Product Overview:
It can be used in homes and factories and is a leakage-monitoring device suitable for detecting natural gas, hydrogen, butane, propane, methane, and smoke.
MQ-3 Product Overview:
Gas sensor sensitivity to alcohol can resist interference from gasoline, smoke, and water vapour. The sensor can detect a variety of alcohol concentrations in the atmosphere.e
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 with high sensitivity to propane and butane, and sound sensitivity. The sensor can detect a variety of combustible gases, especially natural gas.
It can be used in homes and factories as a leakage monitoring device, suitable for detecting 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, and city gas, with the best sensitivity.
Can be used for LPG detection, natural gas, and coal gas monitoring devices suitable for home or industrial use—excellent resistance to alcohol and smoke interference.
MQ-6 Product Overview:
MQ-6 gas sensor for propane, butane, LPG, and natural gas, with high sensitivity. The sensor can detect a wide range of combustible gases and is suitable for a variety of applications.
Suitable for home or industrial use on LPG (liquefied petroleum gas), butane, propane, and LNG (liquefied natural gas) detection devices—excellent resistance to ethanol vapour and mist interference.
MQ-7 Product Overview: MQ-7 Carbon Monoxide Sensor Module
High-low temperature cycling detection mode (1.5V heating) carbon Monoxide Sensor Module detector, conductivity sensor withincreasingg concentration of carbon monoxide gas in the ai, ;high-temperature (5.0V heating) cleaning cryo-adsorption sstrygases. Using a simple circuit to change the conductivity, the gas concentration is converted to the corresponding output signal. The MQ-7 gas sensor has high sensitivity to carbon monoxide. It can detect a variety of gases, including carbon monoxide, and 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, and smoke.
MQ-8 Product Overview:
MQ-8 hydrogen gas sensor for 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:
High-low temperature cycling detection mode (1.5V heating): detecting the carbon monoxide sensor’s conductivity as carbon monoxide gas concentration increases; spurious adsorption at high temperature (5.0 heating): detecting combustible gases, such as methane, propane, and cryogenic gases. MQ-9 gas sensor for high sensitivity to carbon monoxide, methane, and liquefied petroleum gas; this sensor can detect a variety of carbon monoxide and combustible gases and is a low-cost sensor suitable for a variety of applications.
Current Product Support
| SKU | Product | Type | Download/View |
|---|---|---|---|
| MQ-7 Carbon Monoxide Sensor Module - MQ-7 Data Sheet | Document | Download |
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