Gas detection module MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 each of them 1pcs total 9pcs sensor for arduino kit

Gas detection module MQ 2 MQ 3 MQ 4 MQ 5 MQ 6 MQ 7 MQ
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Gas detection module MQ 2 MQ 3 MQ 4 MQ 5 MQ 6 MQ 7 MQ
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USD 3.90/lotUSD 25.38/pieceUSD 5.80/pieceUSD 22.00/pieceUSD 21.50/pieceUSD 21.00/piece

MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 each of them 1pcs total 9pcs

MQ-2 sensor Description: MQ-2 gas sensor sensitive material used in the clean air low conductivity tin oxide (SnO2). When there is the environment in which the combustible gas sensor, conductivity sensor with increasing concentration of combustible gases in air increases. Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-2 gas sensor high on gas, propane, hydrogen sensitivity of detection of natural gas and other flammable vapors are also very good. This sensor can detect a variety of flammable gas, is a low-cost sensors for a variety of applications. Module Applications: Gas may be used in homes and factories leakage monitoring device suitable for the detection of gas, butane , propane , methane , smoke , etc. ; Module Features : 1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2 , the switching signal having a DO (TTL) output and analog output AO ; 3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4 , analog output voltage with the higher concentration of higher voltage. 5, a gas, natural gas, city gas , smoke better sensitivity. 6 , there are four screw holes for easy positioning ; 7 Product dimensions : 32 (L) * 20 (W) * 22 (H) 8 , has a long life and reliable stability 9 , rapid response and recovery characteristics Electrical properties: Input voltage : DC5V Power consumption ( current ): 150mA DO output : TTL digital 0 and 1 ( 0.1 and 5V) AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal .

MQ-3 sensor Introduction : Sensitive material MQ-3 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2). When present in the environment in which the alcohol vapor sensor , a conductivity sensor with increasing concentration of alcohol gas in air is increased . Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. High MQ-3 gas sensor sensitivity to alcohol , gasoline resistant to interference , smoke, water vapor . This sensor can detect various concentrations of alcohol atmosphere , is a low-cost sensors for a variety of applications Module Applications: Other places ethanol vapor detection of alcohol ( ethanol ) testing, field testing for motor vehicle drivers and other non- drinking and operating personnel , but also for Module Features : 1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2 , the switching signal having a DO (TTL) output and analog output AO ; 3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4 , analog output voltage , the higher the concentration the higher the voltage . 5 , for the detection of alcohol have better sensitivity. 6 , there are four screw holes for easy positioning ; 7 Product dimensions : 37MM (L) * 23MM (W) * 23 (H) 8 , has a long life and reliable stability 9 , rapid response and recovery characteristics Electrical properties: Input voltage : DC5V Power consumption ( current ): 150mA DO output : TTL digital 0 and 1 ( 0.1 and 5V) AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal . Wiring: 1, VCC: positive power supply (5V) 2, GND: power supply is negative 3, DO: TTL switching signal output 4, AO: analog signal output

MQ-4 Sensor Description: Sensitive material MQ-4 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2). When there is the environment in which the combustible gas sensor , conductivity sensor with increasing concentration of combustible gases in air increases . Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-4 gas sensor of high sensitivity for methane , propane , butane and has a good sensitivity. This sensor can detect a variety of combustible gases, especially natural gas , is a low-cost sensor for a variety of applications . Suitable for home or factory methane gas , natural gas and other monitoring devices to test natural gas, methane 300 to 10000ppm; Module Features : 1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2 , the switching signal having a DO (TTL) output and analog output AO ; 3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4 , the higher the voltage , the concentration of the analog output voltage is higher. 5 , for methane, natural gas has a good detection sensitivity. 6 , there are four screw holes for easy positioning ; 7 Product dimensions : 32 (L) * 20 (W) * 22 (H) 8 , has a long life and reliable stability 9 , rapid response and recovery characteristics Electrical properties: Input voltage : DC5V Power consumption ( current ): 150mA DO output : TTL digital 0 and 1 ( 0.1 and 5V) AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal .

MQ-5 sensor Introduction : Sensitive material MQ-5 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2). When there is the environment in which the combustible gas sensor , conductivity sensor with increasing concentration of combustible gases in air increases . Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-5 gas sensor of high butane , propane, methane sensitivity, methane and propane can be better taken into account. This sensor can detect a variety of combustible gases, especially natural gas , is a low-cost sensor for a variety of applications . Suitable for home or industrial liquefied petroleum gas , natural gas, coal gas monitoring devices. Excellent resistance to alcohol, smoke interference. Module Features : 1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2 , the switching signal having a DO (TTL) output and analog output AO ; 3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4 , the higher the voltage , the concentration of the analog output voltage is higher. 5 , for gas, natural gas has a better detection sensitivity . 6 , there are four screw holes for easy positioning ; 7 Product dimensions : 32 (L) * 20 (W) * 22 (H) 8 , has a long life and reliable stability 9 , rapid response and recovery characteristics Electrical properties: Input voltage : DC5V Power consumption ( current ): 150mA DO output : TTL digital 0 and 1 ( 0.1 and 5V) AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal .

MQ-6 Sensor Description : Sensitive material MQ-6 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2). When there is the environment in which the combustible gas sensor , conductivity sensor with increasing concentration of combustible gases in air increases . Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-6 gas sensor for propane , butane , liquefied petroleum gas sensitivity is high, natural gas and has a good sensitivity. This sensor can detect a variety of flammable gas , is a low-cost sensors for a variety of applications Suitable for home or industrial LPG ( liquefied petroleum gas ) , butane , propane , LNG ( liquefied natural gas ) detection devices. Excellent resistance to ethanol vapor , smoke interference Module Features : 1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2 , the switching signal having a DO (TTL) output and analog output AO ; 3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4 , 0 ~ 5V analog output voltage , the higher the concentration the higher the voltage . 5 , propane , butane , LPG, LNG has a good detection sensitivity. 6 , there are four screw holes for easy positioning ; 7 Product dimensions : 32 (L) * 20 (W) * 22 (H) 8 , has a long life and reliable stability 9 , rapid response and recovery characteristics

Sensor MQ-7 Description: MQ-7 gas sensor is sensitive material used in clean air, low conductivity tin dioxide (SnO2). Detection method using low temperature cycling (1.5V heating) detect carbon monoxide, airborne sensor conductivity increases with the increase of the concentration of carbon monoxide gas, high temperature (5.0V heating) cleaning stray gas adsorption at low temperature. Using a simple circuit can be changes in the conductivity, concentration of the gas is converted to the corresponding output signal. MQ-7 gas sensor with high sensitivity for carbon monoxide, this sensor can detect a variety of gases containing carbon monoxide, is a low-cost sensors for a variety of applications, Module Applications: For home, carbon monoxide detection device environment. Suitable for carbon monoxide and gas detection. Module Features: 1, using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2, with a DO switch signal (TTL) output and AO analog signal output; 3, TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module) 4, the analog output voltage, the higher the concentration the higher the voltage. 5, the carbon monoxide detection with better sensitivity. 6, there are four screw holes for easy positioning; 7, Product Dimensions: 32 (L) * 20 (W) * 22 (H) 8, with a long service life and reliable stability 9, rapid response and recovery characteristics Electrical properties: Input voltage: DC5V power (current): 150mA DO output: TTL digital 0 and 1 (0.1 and 5V) AO output :0.1-0 .3 V (relatively clean), the highest concentration of voltage around 4V Special note: The sensor is powered, needs to warm up around 20S, measured data becomes stable, the sensor fever is a normal phenomenon, because the internal heating wire, if hot is not normal.

MQ-8 Sensor Description: MQ-8 gas sensor sensitive material used in clean air conductivity is lower tin dioxide (SnO2). When the sensor is present in the environment in which the combustible gas, the sensor\’s conductivity increases with the concentration of combustible gases in air increases. Using a simple circuit can be converted to the change in conductivity of the gas concentration with the corresponding output signal. MQ-8 hydrogen gas sensor of high sensitivity, the monitoring of the other hydrogen-containing gas is also very satisfactory. The sensor can detect a variety of hydrogen-containing gas, in particular, city gas, is a low-cost sensors for a variety of applications. Module Applications: Suitable for domestic or industrial hydrogen leak on a monitoring device. Are not subject to ethanol vapor, soot, carbon monoxide and other gases interference. Module Features: 1, using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2, with a DO switch signal (TTL) output and AO analog signal output; 3, TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module) 4, the analog output voltage, the higher the concentration the higher the voltage. 5, the hydrogen gas detection with better sensitivity. 6, there are four screw holes for easy positioning; 7, Product Dimensions: 32 (L) * 20 (W) * 22 (H) 8, with a long service life and reliable stability 9, rapid response and recovery characteristics Electrical properties: Input voltage: DC5V power (current): 150mA DO output: TTL digital 0 and 1 (0.1 and 5V) AO output :0.1-0 .3 V (relatively clean), the highest concentration of voltage around 4V Special note: The sensor is powered, needs to warm up around 20S, measured data becomes stable, the sensor fever is a normal phenomenon, because the internal heating wire, if hot is not normal.

MQ-9 Sensor Description : Sensitive material MQ-9 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2). Detection method using low temperature cycling (1.5V heating ) to detect carbon monoxide, conductivity sensors with carbon monoxide in the air increased with increasing gas concentration , spurious adsorption at high temperatures (5.0V heating ) detection of combustible gases methane, propane and cryogenic cleaning gases. Simple circuit can be used to change the conductivity , concentration of the gas is converted to the corresponding output signal. MQ-9 high gas sensor for carbon monoxide, methane , liquefied petroleum gas sensitivity , the sensor can detect a variety of gases containing carbon monoxide and flammable , is a low-cost sensors for a variety of applications . Module Applications: Suitable for home or factory gas leakage monitoring devices , monitoring devices suitable for carbon monoxide and other combustible gases , carbon monoxide can be tested 10 to 1000ppm CO, combustible gas range 100 to 10000ppm Module Features : 1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2 , the switching signal having a DO (TTL) output and analog output AO ; 3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4 , the higher the voltage of the analog output voltage with concentration higher . 5 , for the carbon monoxide detector has good sensitivity. 6 , there are four screw holes for easy positioning ; 7 Product dimensions : 32 (L) * 20 (W) * 22 (H) 8 , has a long life and reliable stability 9 , rapid response and recovery characteristics Electrical properties: Input voltage : DC5V Power consumption ( current ): 150mA DO output : TTL digital 0 and 1 ( 0.1 and 5V) AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal .

MQ-135 Sensor Description : Sensitive material MQ135 gas sensor is used in clean air low conductivity tin oxide (SnO2). When the sensor is kept in their environment In the polluting gases , the conductivity sensor with increasing air pollution in gas concentration increases. Using a simple circuit can change the conductivity Conversion of an output signal corresponding to the gas concentration . MQ135 sensor for ammonia, sulfide , benzene vapor high sensitivity of the smoke and other harmful monitor is also very good. This sensor can be seized Measure a variety of harmful gases , is a low-cost sensors for a variety of applications . Probe for home, environmental harmful gas detection device , suitable to ammonia , aromatic compounds , sulfur compounds , benzene vapor , smoke and other gases harmful gases , the gas sensitive element concentration range : 10 to 1000ppm Module Features : 1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions; 2 , the switching signal having a DO (TTL) output and analog output AO ; 3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4 , the higher the voltage , the concentration of the analog output voltage is higher. 5 , air quality , hazardous gas detection with good sensitivity . 6 , there are four screw holes for easy positioning ; 7 Product dimensions : 32 (L) * 20 (W) * 22 (H) 8 , has a long life and reliable stability 9 , rapid response and recovery characteristics Electrical properties: Input voltage : DC5V Power consumption ( current ): 150mA DO output : TTL digital 0 and 1 ( 0.1 and 5V) AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal . Wiring: 1, VCC: positive power supply (5V) 2, GND: power supply is negative 3, DO: TTL switching signal output 4, AO: analog signal output

Packaging Details Unit Type: lot (9 pieces/lot) Package Weight: 0.300kg (0.66lb.) Package Size: 10cm x 10cm x 10cm (3.94in x 3.94in x 3.94in)

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