MQ Air Quality Sensor Series: Comprehensive Range from MQ2 to MQ135 for Environmental Monitoring

Description: 

Introducing the MQ Air Quality Sensors, a versatile and high-quality sensor series designed for a wide range of air quality monitoring applications. This sensor series is available in various variants including MQ2, 3, 4, 5, 6, 7, 8, 9, and 135, offering you the flexibility to integrate it into various setups.

MQ-2 Smoke Liquefied Flammable Gas Sensor

• MQ-2 gas sensor sensitive material used in clean air low conductivity tin oxide (sno2).
  
• Converting the change in the conductivity of the gas concentration with the aid of a simple circuit corresponds to the output signal.
  
• Mq-2 gas sensors high on gas, propane, hydrogen sensitivity of the detection of natural gas and other combustible vapours are also very good.
  
• Input voltage: dc5v power consumption (current): 150ma
  
• Do output: digital TTL 0 and 1 (0.1 and 5v)
  
• A0 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 20sec to measure stable data, sensor heating is a normal phenomenon.
  
• References:
  
• http://bit.ly/How-to-Connect-MQ2-Gas-Sensor
  
• http://bit.ly/Smoke-Detection-using-MQ-2
  

MQ-3 Alcohol Ethanol Gas Sensor Module

• Signal output light indicator
• Analog and level signal output
• TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module).
• The carbon monoxide detection with better sensitivity.
• Has a long service life and reliable stability
• Rapid response recovery features.
• Heater voltage: 5±0.2V (AC•DC)
• Loop voltage: ≤24V (DC)
• Load resistance: Adjustable
• Heating Resistance: 31Ω±3Ω (Room temperature)
• Heating Power: ≤ 900mW
• Surface thermal resistance: 2Kohm-20Kohm (0.4mg/L alcohol)
• Sensitivity: Rs (in the air)/Rs (0.4mg/L alcohol) ≥ 5
• Working temperature: 20 degrees ±2 degree
• Humidity: 65%±5%RH
• References:
• http://bit.ly/MQ-3-Alcohol-Sensor
• http://bit.ly/MQ3-Alcohol-Sensor-Tutorial

MQ-4 Gas Methane Sensor Module

• 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
• Module Features :
• The switching signal has a DO (TTL) output and analogue output AO ;
• TTL output valid signal is low. ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
• The higher the voltage, the concentration of the analogue output voltage is higher.
• For methane, natural gas has a good detection sensitivity.
• Special note: After the sensor is powered, needs to warm up around 20sec to measure stable data, sensor heating is a normal phenomenon.
• Reference:
• http://bit.ly/MQ4-Gas-Sensor

 MQ-5 LPG Gas City Gas Sensor Module

• A sensitive material MQ-5 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2)
• Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal.
• MQ-5 gas sensors of high butane, propane, methane sensitivity, methane and propane can be better taken into account.
• 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 20sec to measure stable data, sensor heating is a normal phenomenon.
• Reference:
• http://bit.ly/Interface-MQ5-LPG-Sensor

MQ-6 Module Liquefied Propane-Butane Sensor Module

• 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
• Using high-quality dual-panel design, with power indicator and TTL signal output instructions;
• The switching signal has a DO (TTL) output and analogue output AO ;
• TTL output valid signal is low. ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
• Analog output voltage with a higher concentration of higher voltage.
• Special note: After the sensor is powered, needs to warm up around 20sec to measure stable data, sensor heating is a normal phenomenon.
• References:
• http://bit.ly/LPG-Sensor-with-MQ-6-and-Arduino
• http://bit.ly/MQ-6-GAS-Sensor

MQ-7 module Carbon monoxide gas sensor

• Testing gas: Carbon Monoxide
• Detection of concentration: 10-1000ppmCO
• Loop voltage: 10V DC
• Heater voltage: 5V±0.2V ACorDC(high), 1.5V±0.1V ACorDC(low)
• Load resistance: adjustable
• Heating resistor: 31±3(indoor temperature)
• Heating dissipation: 350mW
• Sensitive part surface resistance: 2K-20K
• Sensitivity: Rs(in air)/Rs(100ppmCO)5
• Concentration gradient: 0.6
• Temperature, humidity: 20±2, 65%±5%RH
• Standard test circuit: Vc: 5v ±0.1v, Vh(high): 5v ±0.1v, Vh(low): 1.5v ±0.1v
• References:
• http://bit.ly/MQ-7-Carbon-Monoxide-Sensor
• http://bit.ly/How-to-Use-the-MQ-7-Carbon-Monoxide-Sensor

MQ-8 hydrogen sensor

• It has DO switching signal (TTL) output and AO analogue signal output.
• The TTL output effective signal is low level. (when the output is low, the signal lights on, and can be directly connected to a single chip or a relay module).
• To simulate the output voltage, the higher the concentration, the higher the voltage.
• It has good sensitivity to the detection of hydrogen.
• four screw holes are easy to locate;
• The shape of the product: 32 (L) *20 (W) *22 (H)
• Long-term life and reliable stability
• Fast response recovery characteristics
• Electrical performance:
• Input voltage: DC5V power consumption (current): 150mA
• DO output: TTL digits 0 and 1 (0.1 and 5V)
• AO output: 0.1-0.3V (relatively pollution-free)
• Reference:
• http://bit.ly/MQ-8-Hydrogen-Gas-Sensor

MQ-9 Carbon Monoxide Combustible Gas Sensor

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.

• 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 20sec to measure stable data, sensor heating is a normal phenomenon.
• References:
• http://arduinolearning.com/gas-sensors/mq-9-gas-sensor.php
• http://bit.ly/MQ-9-Sensor-Tutorial

MQ-135 Air Quality and Hazardous Gas Detection Sensor

• A MQ135 gas sensor is used in clean air low conductivity tin oxide (SnO2)
• In the polluting gases, the conductivity sensor with increasing air pollution in gas concentration increases.
• MQ135 sensor for ammonia, sulfide, and benzene vapour high sensitivity of the smoke.
• 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
• VCC: positive power supply (5V)
• GND: power supply is negative
• DO: TTL switching signal output
• AO: analogue signal output
• Special Note: After the sensor is powered, it needs to warm up around 20 degrees to measure stable data, sensor heating is a normal phenomenon.
• References:
• http://bit.ly/MQ135-Gas-Sensor-with-Arduino
• https://github.com/smilexth/MQ135-Arduino-Sensor

Package Included
- 1pcs x MQ sensor

#MQ Air Quality Sensors

Standard: $5.99

Rural: $8.99

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