MQ-4 Natural Gas sensor The MQ-4 gas sensor is a device that is used to detect the presence of methane gas in the air. It is often used in applications such as natural gas leak detection, indoor air quality monitoring, and the oil and gas industry. The MQ-4 sensor is a type of metal oxide semiconductor (MOS) gas sensor. It works by measuring the conductivity of the air, which changes when the sensor is exposed to methane gas. The sensor has a high sensitivity to methane, making it well-suited for detecting low levels of gas. To use the MQ-4 sensor, it must be connected to a microcontroller or other control device. The sensor outputs an analogue signal that can be read by the microcontroller, which can then be used to trigger an alarm or other response when the concentration of methane gas reaches a certain level. The MQ-4 sensor is relatively simple to use and is widely available, making it a popular choice for gas detection applications. However, it is important to note that the sensor may not be able to detect other types of gases, and it may require regular calibration to ensure accurate readings. If you want to use this MQ-4 Gas Sensor with Arduino, for that you will need Arduino jumper wires buzzer or siren Features: High sensitivity: The MQ-4 sensor has a high sensitivity to methane gas, making it well-suited for detecting low levels of the gas. Fast response time: The sensor has a fast response time, with a recovery time of fewer than 10 seconds. This allows it to quickly detect changes in the concentration of methane gas in the air. Compact size: The MQ-4 sensor is small and compact, with dimensions of approximately 32mm x 22mm x 55mm. This makes it easy to install and integrate into various types of systems. Wide operating temperature range: The sensor can operate at temperatures between -10 and 50°C, making it suitable for use in a wide range of environments. Easy to use: The MQ-4 sensor is relatively simple to use and can be easily connected to a microcontroller or other control device. Widely available: The MQ-4 sensor is widely available Applications: Natural gas leak detection Indoor air quality monitoring Oil and gas industry Agricultural applications Other applications Also check the MQ-5 Gas Sensor Module for detecting gases such as methane, propane, and natural gas. It operates by measuring the resistance of a metal oxide semiconductor material to changes in gas concentration. The sensor is sensitive to a wide range of gases, has a fast response time, and high sensitivity.

MQ-4 Natural Gas Sensor Module This is a straightforward MQ-4  Gas Sensor Module that detects the presence of Compressed Natural Gas (CNG), methane (CH4), and other gases in the air. Our MQ-4 sensor is used in the module. It simplifies the interface to the sensor's odd pin spacing by providing the interface via standard 4 x 0.1?? header pins. It has an analogue output that corresponds to the concentration of gases in the air and a simple digital output. The onboard potentiometer can be used to set the maximum gas concentration that will trigger the digital output. The MQ-4 sensor is capable of detecting natural gas concentrations ranging from 200 to 10000ppm. Simply connect the MQ 4 sensor module to 5V, set the threshold, and you can begin measuring the gas concentration in the air around the sensor! The presence of any gas is indicated by an onboard LED. Microcontrollers and other circuits can easily interface with the digital output. The analogue output can be connected to a microcontroller's ADC to obtain a wide range of sensor readings. This is a simple compressed natural gas (CNG) sensor for sensing natural gas concentrations in the air (mostly Methane [CH4]). If you want to use this MQ-4 Gas Sensor Module with Arduino, for that you will need Arduino jumper wires buzzer or siren Features: Signal output indicator Dual Signals output (analog output and TTL output) The TTL output signal is low level, allows to connect with SCM directly High sensitivity Long working life and stable performance Quick response and recovery. Read our blog MQ sensor where we explained what is a gas sensor, what is 1ppm equal to, MQ sensor list of different series and their features. MQ-4 Natural Gas Sensor Module pin Diagram MQ-4 Natural Gas Sensor Module pin description 1 AO Analog output ( Sensor data output in analog form) 2 DO Digital output ( Sensor data output in digital form) 3 GND To -ve of power supply 4 VCC To +ve of power supply Applications: Domestic gas leakage detector Industrial Combustible gas detector Portable gas detector Model MQ4 Gas Sensor Module IC Chip LM393 Operating Voltage 3 ~ 5V (DC) Detecting Range 300ppm to 10000ppm Dimensions 3.1 x 1.9 x 2.1 cms Weight 5 grams

MQ-5 Gas Sensor The MQ-5 gas sensor is a device that is used to detect the presence of various gases, including methane, propane, and natural gas. It operates by measuring the resistance of a metal oxide semiconductor (MOS) material to changes in the concentration of the target gas in the air. The MQ-5 sensor is sensitive to a wide range of gases, making it suitable for use in a variety of applications, such as detecting gas leaks in homes and buildings, monitoring indoor air quality, and detecting the presence of harmful gases in industrial settings. The sensor has a fast response time and high sensitivity, making it capable of detecting small concentrations of gases. The MQ-5 gas sensor consists of a sensing element, and a heating element. The sensing element is made of a metal oxide material that is sensitive to the target gas. The heating element is used to maintain the temperature of the sensing element at a constant level, which is necessary for accurate gas detection. If you want to use this MQ-5 Gas Sensor Module with Arduino, for that you will need Arduino jumper wires buzzer or siren Applications: Detecting LPG Detecting natural gas Detecting coal gas Detecting alcohol Detecting cooking fumes Detecting cigarette smoke read our blog explaining all about mq gas sensor , provides comprehensive information about MQ gas sensors, specifically the MQ series of gas sensors

MQ-5 Gas Sensor Module The Simple MQ-5 Gas Sensor Module is an inexpensive way to add basic gas sensing to your project. A Buzzer is used by the MQ-5 Methane LPG Liquid Propane Gas Sensor Module particulate sensor to detect any detected material that is even present in the air! This MQ-5 Methane LPG Liquid Propane Gas Sensor Module is widely used in gas leak detection pieces of equipment in the home and industry, and is suitable for detecting LPG, natural gas, town gas, as well as avoiding the noise of alcohol and cooking fumes and cigarette smoke. The MQ5 (MQ-5) sensor is used in gas leakage detection equipment in consumer and industrial applications. It can detect LPG, natural gas, and coal gas. Avoid alcohol noise, cooking fumes, and cigarette smoke. The potentiometer can be used to adjust the sensitivity. The MQ-5 gas sensor's sensitive material is tin Oxide (SnO2), which has a lower conductivity in clean air. When the target combustible gas is present, the sensor's conductivity increases as the gas concentration rises. Please use a simple electro circuit to convert the change in conductivity to the corresponding gas concentration output signal. The MQ-5 gas sensor has a high sensitivity to methane, propane, and butane and can detect both methane and propane. The sensor could be used to detect various combustible gases, particularly methane; it is low-cost and suitable for a variety of applications. If you want to use this MQ-5 Gas Sensor Module with Arduino, for that you will need Arduino jumper wires buzzer or siren Read our blog explaining the classification of sensors in IoT detailing 5 core classifications depending on how they work, 10 types of sensors, and the Characteristics of Sensors in IoT. MQ-5 Gas Sensor Module Pin Diagram MQ-5 Gas Sensor Module Pin Description 1 AO Analog output ( Sensor data output in analog form) 2 DO Digital output ( Sensor data output in digital form) 3 GND To -ve of power supply 4 VCC To +ve of power supply Applications: Detecting LPG Detecting natural gas Detecting coal gas Detecting alcohol Detecting cooking fumes Detecting cigarette smoke

MQ-6 Gas Sensor Module The MQ-6 gas sensor module is a simple and easy-to-use device designed to sense LPG, composed mainly of propane and butane, concentrations in the air. With a sensitivity range from 200 to 10,000ppm, the MQ-6 gas sensor is suitable for a range of applications. The MQ-6 gas sensor has high sensitivity and fast response times. The sensor's output is an analog resistance, and the drive circuit is uncomplicated, requiring only a 5V power source to the heater coil, a load resistance, and a connection to an ADC. The MQ-6 gas sensor employs SnO2 as its sensitive material, which has low conductivity in clean air. As the concentration of target combustible gas increases, the sensor's conductivity rises correspondingly. By using a simple electro circuit, the change in conductivity can be converted into a corresponding gas concentration output signal. This gas sensor is highly sensitive to propane, butane, and LPG, as well as natural gas. The sensor can detect different combustible gases, particularly methane, and is suitable for various applications due to its low cost. Features Operating Voltage is +5V Can be used to detect LPG or Butane gas Analog output voltage: 0V to 5V Digital Output Voltage: 0V or 5V (TTL Logic) Preheat duration 20 seconds Can be used as a Digital or analog sensor The Sensitivity of Digital pin can be varied using the potentiometer Applications: Detect or measure Gases like LPG, and butane Air quality monitor Gas leak alarm Safety standard maintenance Maintaining environmental standards  in hospitals Also check the mq135 gas sensor , which is a versatile device designed for detecting gases like ammonia, sulfur dioxide, and carbon monoxide.

MQ-7 Gas Sensor The MQ-7 gas sensor is a device that can detect the presence of carbon monoxide (CO) gas in the air. It is commonly used in applications such as gas leak detectors, safety devices, and industrial control systems. The MQ-7 sensor operates by using a chemical reaction between the CO gas and a conductive metal oxide to produce a current. The magnitude of the current is proportional to the concentration of CO gas in the air. The sensor can be used to detect CO gas concentrations in the range of 20-2000 ppm. It is important to note that CO is a poisonous gas that can be dangerous at high concentrations. It is recommended to use the MQ-7 gas sensor with caution and to take appropriate safety measures when working with it. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm. This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance.

MQ-7 Gas Sensor Module The MQ-7 gas sensor module is a device that can detect the presence of carbon monoxide (CO) gas in the air. It is commonly used in applications such as gas leak detectors, safety devices, and industrial control systems. The MQ-7 sensor operates by using a chemical reaction between the CO gas and a conductive metal oxide to produce a current. The magnitude of the current is proportional to the concentration of CO gas in the air. The gas sensor can be used to detect CO gas concentrations in the range of 20-2000 ppm. It is important to note that CO is a poisonous gas that can be dangerous at high concentrations. It is recommended to use the MQ-7 sensor with caution and to take appropriate safety measures when working with it. This module provides both digital and analog outputs. The threshold level for digital output can be easily adjusted using the preset on the board. The MQ-7 sensor module can be easily interfaced with microcontrollers, Arduino and etc. Read our blog MQ sensor where we explained what is a gas sensor, what is 1ppm equal to, MQ sensor list of different series and their features. Applications: Domestic gas leakage detector Industrial CO detector Portable gas detector Standard Test Conditions of MQ7 Gas Sensor Temperature: 20°C ± 2°C Humidity: 65% ± 5% RH Standard Test Circuit: Vc: 5.0V ± 0.1V; Vh(high):5.0V±0.1V Vh(low): 1.5V±0.1V

MQ-8 Gas Sensor Module The MQ-8 gas sensor module is a device that can detect the presence of hydrogen gas in the air. It is commonly used in applications such as gas leak detectors, safety devices, and industrial control systems. The MQ-8 sensor operates by using a chemical reaction between the hydrogen gas and a conductive metal oxide to produce a current. The magnitude of the current is proportional to the concentration of hydrogen gas in the air. The sensor can be used to detect hydrogen gas concentrations in the range of 100-10000 ppm. Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-8 hydrogen gas sensor of high sensitivity, the monitoring of the other hydrogen-containing gas is also very satisfactory. This sensor can detect a wide range of hydrogen gas, city gas, in particular, is a low-cost sensor for a variety of applications. Suitable for home or industrial hydrogen leakage monitoring devices. Can not interfere with ethanol vapor, soot, carbon monoxide, and other gases. Applications: Detect leakages in the industry Used in mines Can be used in refrigerators and AC

MQ-9 Gas Sensor Module This is MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor Module can be used to sense Carbon Monoxide and Methane Gas. The sensitive material of the MQ-9 gas sensor is SnO2, which with lower conductivity in clean air. It makes detection by the method of cycle high and low temperature, and detect CO when the low temperature (heated by 1.5V). The sensor’s conductivity is higher along with the gas concentration rising. The MQ9 Gas Sensor Module conductivity is higher along with the gas concentration rising. When temperature rises (heated by 5.0V), it detects Methane, Propane, combustible gas, etc. and cleans the other gases as it absorbed under low temperature. MQ-9 usually applied in domestic gas leakage detector, industrial gas detector, portable gas detector, etc. When the high temperature (heated by 5.0V), it detects Methane, Propane, etc. combustible gas and cleans the other gases adsorbed under low temperature. Read our blog MQ sensor where we explained what is a gas sensor, what is 1ppm equal to, MQ sensor list of different series and their features. MQ9 Gas Sensor Wire Connections: VCC - Positive pole (5V) GND - Negative pole DO - TTL switch signal output AO - Analog signal output Applications: The domestic gas leakage detector Industrial gas detector Portable gas detector

MQ131 Ozone Gas Detection Module The MQ131 gas sensor module is a device that can detect the presence of ozone gas (O3) in the air. It is commonly used in applications such as air quality monitors and industrial control systems. The MQ131 sensor operates by using a chemical reaction between the ozone gas and a conductive metal oxide to produce a current. The magnitude of the current is proportional to the concentration of ozone gas in the air. The sensor can be used to detect ozone gas concentrations in the range of 0.05-10 ppm. Ozone is a toxic gas that can be harmful to humans at high concentrations. It is recommended to use the MQ131 sensor with caution and to take appropriate safety measures when working with it. The sensitive material of the MQ131 gas sensor is O3 SnO2, which with lower conductivity in clean air. When Ozone gas exists. The sensor’s conductivity is higher along with the gas concentration rising. Please use a simple electro circuit, Convert the change of conductivity to corresponding output signal of gas concentration. MQ131 gas sensor has a high sensitivity to Ozone, also sensitive to O3 CL2, NO2, etc. Features: Detection Gas: Ozone (O3). Detection Range: 10 to 1000 ppb (parts per billion). Sensor Type: Semiconductor. Operating Voltage: Typically 5V DC. Output: Analog signal output, with a voltage range of 0-5V. Sensitivity: High sensitivity to ozone and other strong oxidizing gases like chlorine (Cl2) and nitrogen dioxide (NO2). Response Time: Fast response and recovery. Durability: Long service life and reliable stability. Interface: Easy to interface with microcontrollers like Arduino and Raspberry Pi. Power Consumption: Low power consumption, suitable for continuous monitoring APPLICATIONS: Domestic ozone concentration alarm Industrial ozone concentration alarm Portable ozone concentration detector