
MQ-7B Semiconductor Sensor for Carbon Monoxide
- CO
- 10-500ppm
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MQ316 Mouth smell sensor
- Mouth odor:C2H5OH、H2S、CH3SH
- C2H5OH(5-200ppm)
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MQ303B Semiconductor Sensor for Alcohol Gas
- C2H5OH
- 20-500ppm
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MQ138 VOC Gas Sensor
- C7H8、CH3COCH3、C2H5OH、H2
- 5~500ppm
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MQ137 Ammonia Gas Sensor
- NH3
- 5-500ppm
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MQ136 Gas Sensor for Hydrogen Sulfide
- H2S
- 1-200ppm
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MQ135 Semiconductor Sensor for Air Quality
- Air pollution:NH3、sulfide、benzene series steam
- NH3、C7H8、H2、Smoke(10~1000ppm)
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MQ131 Ozone Gas Sensor (Low Concentration)
- O3
- 10-1000ppb
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MQ131 Ozone Gas Sensor (High Concentration)
- O3
- 10-1000ppm
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MQ-9B Semiconductor Sensor for Carbon Monoxide
- CO,CH4
- CO(10-500ppm),CH4(300-10000ppm)
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MQ-8 Hydrogen Gas Sensor
- H2
- 100-1000ppm
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MQ-6 Semiconductor Sensor for Flammable Gas
- LPG,CH4
- CH4、C3H8(300-10000ppm)
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MQ-5B Semiconductor Sensor for Flammable Gas
- LPG,CH4
- CH4、C3H8(300-10000ppm)
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MQ-5 Semiconductor Sensor for Flammable Gas
- LPG,CH4
- CH4、C3H8(300-10000ppm)
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MQ-4B Semiconductor Sensor for Flammable Gas
- CH4,Flammable gas
- 300-10000ppm
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MQ-4 Semiconductor Sensor for Flammable Gas
- CH4,Flammable gas
- CH4(300-10000ppm)
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MQ-3B Semiconductor Sensor for Alcohol Gas
- C2H5OH
- 25-500ppm
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MQ-2B Semiconductor Sensor for Flammable Gas
- Flammable gas,Smoke
- 300-10000ppm(Flammable gas)
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MQ-2 Semiconductor Sensor for Flammable Gas
- Flammable gas,Smoke
- 300-10000ppm(Flammable gas)
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MP905 Air-Quality Gas Sensor
- alcohol, smoke, formaldehyde, toluene, acetone, benzene,lighter gas,paint &etc.
- 0.5-1000ppm(C2H5OH)
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MP901 Air-Quality Gas Sensor
- alcohol, smoke, formaldehyde, toluene, acetone, benzene,lighter gas,paint &etc.
- 1-50ppm
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MP801 Air-Quality Gas Sensor
- air quality:C6H6、C7H8、CH2O、C2H5OH、smoke
- 0.5-1000ppm(C2H5OH)
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MP-702 Ammonia Gas Sensor
- NH3
- 0-100ppm
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MP510C Refrigerant Gas Sensor
- refrigerant gases:R32、R134a、R410a、R290
- 100-10000ppm
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MP503 Air-Quality Gas Sensor
- C2H5OH、smoke、iso-butane、CH2O
- 10-1000ppm(C2H5OH)
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MP-9 CO/CH4 Semiconductor Flat Surfaced Gas Sensor
- CO,CH4
- 50-1000ppm(CO),300-10000ppm(CH4)
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MP-7 Carbon Monoxide GAS SENSOR
- CO
- 50-1000ppm
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MP-5 Flammable Gas Sensor
- LPG,C3H8
- 300-10000ppm
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MP-4C Flammable Gas Sensor
- CH4,Nature gas,Marsh gas
- 300-12000ppm
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MP-4 Flammable Gas Sensor
- CH4,Nature gas,Marsh gas
- 300-10000ppm
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MP-3B Flat Surfaced Alcohol Sensor
- C2H5OH
- 0-500ppm
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MP-2 Smoke Gas Sensor
- C3H8、smoke
- 200~10000ppm
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GM-802B MEMS NH3 Gas Sensor
- NH3
- 1-300ppm
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GM-702B MEMS Carbon Monoxide Gas Sensor
- CO
- 5-5000ppm
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GM-602B MEMS H2S Gas Sensor
- H2S, Benzene
- 0.5-50ppm
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GM-512B MEMS Breath Smell Gas Sensor
- Mouth odor:H2S、C2H5OH、Acetone
- 0.5-50ppm
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GM-502B MEMS VOC Gas Sensor
- VOC、C2H5OH、CH2O、C7H8
- 1-500ppm
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GM-402B MEMS Combustible Gas Sensor
- CH4,C3H8
- 1-10000ppm
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GM-302B MEMS Alcohol Gas Sensor
- Ethanol vapor
- 1-500ppm
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GM-202B MEMS Smoke Gas Sensor
- C2H5OH,smoke
- 10-1000ppm
- Read More

GM-102B MEMS NO2 Gas Sensor
- NO2
- 0.1-10ppm
- Read More
Help you compare our sensors
Table Overview for Winsen Semiconductor gas sensor
Unsure which sensor to choose, please leave your infomation or email us
Modle | Detection principle | Characteristics | Target gas | Detection range | Size |
---|---|---|---|---|---|
![]() MQ-7B |
Semiconductor | Good sensitivity to CO | CO | 10-500ppm | φ16.7×9.4 |
![]() MQ316 |
Semiconductor | High sensitivity to C2H5OH、H2S、CH3SH | Mouth odor:C2H5OH、H2S、CH3SH | C2H5OH(5-200ppm) | φ9.4×8 |
![]() MQ303B |
Semiconductor | High sensitivity to C2H5OH and quick response and resume | C2H5OH | 20-500ppm | φ9.4×6 |
![]() MQ138 |
Semiconductor | High sensitivity to C7H8、CH3COCH3、C2H5OH、CH2O | C7H8、CH3COCH3、C2H5OH、H2 | 5~500ppm | φ19×24.2 |
![]() MQ137 |
Semiconductor | Good sensitivity to NH3 | NH3 | 5-500ppm | φ19×24.2 |
![]() MQ136 |
Semiconductor | Good sensitivity to H2S | H2S | 1-200ppm | φ19×24.2 |
![]() MQ135 |
Semiconductor | Good sensitivity to toxic gas | Air pollution:NH3、sulfide、benzene series steam | NH3、C7H8、H2、Smoke(10~1000ppm) | φ19×24.2 |
![]() MQ131-L |
Semiconductor | Good sensitivity to O3 | O3 | 10-1000ppb | φ16×13.9 |
![]() MQ131-H |
Semiconductor | Good sensitivity to O3 | O3 | 10-1000ppm | φ19×24.2 |
![]() MQ-9B |
Semiconductor | Good sensitivity to CO | CO,CH4 | CO(10-500ppm),CH4(300-10000ppm) | φ16.7×9.4 |
![]() MQ-8 |
Semiconductor | Good sensitivity to H2 | H2 | 100-1000ppm | φ19×24.2 |
![]() MQ-6 |
Semiconductor | Good sensitivity to flammable gas(Especially C3H8) | LPG,CH4 | CH4、C3H8(300-10000ppm) | φ19×24.2 |
![]() MQ-5B |
Semiconductor | Good sensitivity to flammable gas(Especially C3H8) | LPG,CH4 | CH4、C3H8(300-10000ppm) | φ16.7×9.4 |
![]() MQ-5 |
Semiconductor | Good sensitivity to flammable gas(Especially C3H8) | LPG,CH4 | CH4、C3H8(300-10000ppm) | φ19×24.2 |
![]() MQ-4B |
Semiconductor | High sensitivity to CH4 and strong anti-interference ability | CH4,Flammable gas | 300-10000ppm | φ16.7×9.4 |
![]() MQ-4 |
semiconductor | High sensitivity to CH4 and strong anti-interference ability | CH4,Flammable gas | CH4(300-10000ppm) | φ19×24.2 |
![]() MQ-3B |
semiconductor | High sensitivity to alcohol gas and can resistant to the interference of gasoline, smoke and vapour. | C2H5OH | 25-500ppm | φ17×9.4 |
![]() MQ-2B |
Semiconductor | High sensitivity to C3H8 and smoke | Flammable gas,Smoke | 300-10000ppm(Flammable gas) | φ16.7×9.4 |
![]() MQ-2 |
Semiconductor | Has high sensitivity to C3H8 and smoke | Flammable gas,Smoke | 300-10000ppm(Flammable gas) | φ19×24.2 |
![]() MP905 |
Semiconductor | High sensitivity to benzene,toluene,formaldehyde,alcohol,smoke,lighter gas,paints | alcohol, smoke, formaldehyde, toluene, acetone, benzene,lighter gas,paint &etc. | 0.5-1000ppm(C2H5OH) | φ9.4×7.5 |
![]() MP901 |
Semiconductor | High sensitivity to alcohol、smoke、formaldehyde、toluene、acetone、benzene、lighter gas、paint &etc. | alcohol, smoke, formaldehyde, toluene, acetone, benzene,lighter gas,paint &etc. | 1-50ppm | φ9.4×7.5 |
![]() MP801 |
Semiconductor | High sensitivity to C6H6、C7H8、CH2O、C2H5OH、smoke | air quality:C6H6、C7H8、CH2O、C2H5OH、smoke | 0.5-1000ppm(C2H5OH) | φ9.4×7 |
![]() MP-702 |
Semiconductor | High sensitivity to NH3 | NH3 | 0-100ppm | φ9.4×7 |
![]() MP510C |
Semiconductor | Can detect kinds of refrigerant gases | refrigerant gases:R32、R134a、R410a、R290 | 100-10000ppm | φ9.05×12.5 |
![]() MP503 |
Semiconductor | High sensitivity to C2H5OH、smoke、iso-butane、CH2O | C2H5OH、smoke、iso-butane、CH2O | 10-1000ppm(C2H5OH) | φ9.4×7 |
![]() MP-9 |
Semiconductor | High sensitivity to CO、CH4 | CO,CH4 | 50-1000ppm(CO),300-10000ppm(CH4) | φ9.4×7.5 |
![]() MP-7 |
Semiconductor | High sensitivity to CO | CO | 50-1000ppm | φ9.4×8 |
![]() MP-5 |
Semiconductor | Highest sensitivity to C3H8 | LPG,C3H8 | 300-10000ppm | φ9.4×7 |
![]() MP-4C |
Semiconductor | Highest sensitivity to CH4、excellent anti-interference ability and stability | CH4,Nature gas,Marsh gas | 300-12000ppm | φ9.15×12.5 |
![]() MP-4 |
Semiconductor | Highest sensitivity to CH4 | CH4,Nature gas,Marsh gas | 300-10000ppm | φ9.4×7 |
![]() MP-3B |
Semiconductor | Highest sensitivity to C2H5OH | C2H5OH | 0-500ppm | φ9.4×6 |
![]() MP-2 |
Semiconductor | Good sensitivity to LPG、smoke | C3H8、smoke | 200~10000ppm | φ9.4×7 |
![]() GM-802B |
Semiconductor、MEMS | High sensitivity to NH3 | NH3 | 1-300ppm | 5×5×1.55 |
![]() GM-702B |
Semiconductor、MEMS | High sensitivity to CO | CO | 5-5000ppm | 5×5×1.55 |
![]() GM-602B |
Semiconductor、MEMS | High sensitivity to H2S | H2S, Benzene | 0.5-50ppm | 5×5×1.55 |
![]() GM-512B |
Semiconductor、MEMS | High sensitivity to H2S, C2H5OH, Acetone | Mouth odor:H2S、C2H5OH、Acetone | 0.5-50ppm | 5×5×1.55 |
![]() GM-502B |
Semiconductor、MEMS | MEMS technology, good shock resistance, small sizes and low power consumption | VOC、C2H5OH、CH2O、C7H8 | 1-500ppm | 5×5×1.55 |
![]() GM-402B |
Semiconductor、MEMS | High sensitivity to combustible gases, small sizes and low power consumption | CH4,C3H8 | 1-10000ppm | 5×5×1.55 |
![]() GM-302B |
Semiconductor、MEMS | MEMS technology, good shock resistance, small sizes and low power consumption | Ethanol vapor | 1-500ppm | 5×5×1.55 |
![]() GM-202B |
Semiconductor、MEMS | High sensitivity to smoke,C3H8 | C2H5OH,smoke | 10-1000ppm | 5×5×1.55 |
![]() GM-102B |
Semiconductor、MEMS | High sensitivity to NO2 gas, small sizes and low power consumption | NO2 | 0.1-10ppm | 5×5×1.55 |
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Semiconductor gas sensor Knowledge
Keeping low CO2 level is important for human health, which not only means that the current environment has sufficient fresh air, but also greatly reduce the risk of building syndrome. Winsen CO2 sensor meets RESET standard, which is widely used in control panels or thermostats for HVAC systems.