MQ-136 Hydrogen Gas Sensor For Hydrogen Sulfide Detector Module MQ136 Gas Sensor can be used to monitor the concentration of Hydrogen Sulfide gas. This Module simplifies using the MQ-136 gas sensor by providing digital as well as analog output which can be interfaced with Microcontrollers, Arduino, and Raspberry pi. The sensitive material of the MQ136 gas sensor is SnO2, which with lower conductivity in clean air. When the target Hydrogen sulfide gas exists, the sensor’s conductivity is higher along with the Hydrogen sulfide concentration rising. Please use a simple electric circuit, Convert the change of conductivity to the corresponding output signal of gas concentration. MQ136 gas sensor has a high sensitivity to Hydrogen sulfide, Low sensitivity to other combustible gas. It is at a low cost and suitable for different applications. Applications: Domestic Hydrogen sulfide detector Industrial Hydrogen sulfide detector Portable Hydrogen sulfide detector Gas leak monitoring device suitable for home or factory, suitable for liquefied gas, butane, propane, methane, alcohol, hydrogen, smoke, and other monitoring devices.

MQ-137 NH3 Gas Sensor Module The MQ137 sensor is a gas sensor module specially designed to detect and sense gases like ammonia (NH3) and carbon monoxide (CO). The MQ-137 gas sensor module is a device that can detect the presence of ammonia (NH3) gas in the air. It is commonly used in applications such as air quality monitors, industrial control systems, and agricultural environments. The MQ-137 sensor operates by using a chemical reaction between the ammonia gas and conductive metal oxide to produce a current. The magnitude of the current is proportional to the concentration of ammonia gas in the air. The sensor can be used to detect ammonia gas concentrations in the range of 0-1000 ppm. Ammonia is a toxic gas that can be harmful to humans at high concentrations. It is recommended to use the MQ-137 sensor with caution and to take appropriate safety measures when working with it. Applications: Detect or measure Gases like NH3 or CO Air quality monitor Gas leak alarm Safety standard maintenance Maintaining environmental standards  in hospitals

MQ-2 NH3 Gas Sensor Module The MQ-2 gas sensor is a device that can detect a variety of gases, including flammable gases such as propane and methane, as well as smoke. It is commonly used in applications such as gas leak detectors, safety devices, and industrial control systems. The MQ-2 sensor operates by using a chemical reaction between the target gas and conductive metal oxide to produce a current. The magnitude of the current is proportional to the concentration of the target gas in the air. The gas sensor can be used to detect a wide range of gas concentrations, depending on the specific type of gas being detected. It is important to note that the MQ-2 sensor is not selective for specific gas and may be triggered by other gases as well. It is recommended to use the MQ-2 sensor with caution and to take appropriate safety measures when working with it. Applications: Detect or measure Gases like H2, LPG, CH4, CO, Smoke or Propane Air quality monitor Gas leak alarm Safety standard maintenance Maintaining environmental standards  in hospitals

MQ-2 Gas Sensor Module The MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module is useful for gas leakage detection (home and industry). It is suitable for detecting H2, LPG, CH4, CO, Alcohol, Smoke, or Propane. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by the potentiometer This MQ-2 Smoke and gas detector module works with 5V power, making it easy to connect to most projects. You can get two types of readings from it—an analog output, which gives you a range of values (0V to 5V) based on the gas level, or a digital output that’s either on (5V) or off (0V). Check out the entire range of Gas Sensors . Also explore the exclusive collection for Sensors . Applications: Safety of home Control of air quality Measurement of gas level

MQ-2 Gas Sensor Module The MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module is useful for gas leakage detection (home and industry). It is suitable for detecting H2, LPG, CH4, CO, Alcohol, Smoke, or Propane. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by the potentiometer MQ-2 gas sensor using gas-sensitive material is to be clean air in the lower conductivity of tin oxide (SnO2). When the sensor when flammable gases are present in the environment in which the conductivity of the sensor with an increasing concentration of combustible gas in the air increases. Use a simple circuit to convert the changes in conductivity and output signal that corresponds to the concentration of the gas. MQ-2 gas sensor's higher sensitivity to liquefied petroleum gas, propane, hydrogen, detection of gas, and other combustible vapours are ideal. This sensor can detect a variety of flammable gas, and is a low-cost sensor for many applications. Check out the entire range of Gas Sensors . Applications: Safety of home Control of air quality Measurement of gas level

MQ-3 Gas Sensor Module This is the MQ-3 Gas Sensor Module, which is simple to use. It can sense the presence of Alcohol in the air. The module uses our MQ-3 sensor. It simplifies the interface to the odd pin spacing of the sensor and provides an interface through standard 4 x 0.1? header pins.  MQ-3 gas sensor provides an analog output corresponding to the concentration of the gas in the air and an easy-to-use digital output. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. Its conductivity increases as the concentration of alcohol gasses increases. It has a high sensitivity to alcohol and has good resistance to disturbances due to smoke, vapour and gasoline. MQ-3 gas sensor module provides both digital and analog outputs. It can be easily interfaced with Microcontrollers like Arduino Boards , Raspberry Pi etc. This MQ-3 alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. The sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC read more : All About MQ Series Gas Sensor Key Features: Semiconductor Sensor Type Simple SIP header interface Compatible with the majority of microcontrollers Mode of low-power standby Heater voltage is required Excellent sensitivity to alcohol gas High sensitivity and rapid response Longevity at a low cost MQ-3 Gas Sensor Module Pin Diagram: MQ-3 Gas Sensor Module Pin Description MQ-3 Gas Sensor Module Pin Description: Pin Number Pin Name Description 1 VCC This pin provides power to the module; the typical operating voltage is +5V. 2 GND This pin Connects the module to the system ground. 3 DO ( Digital Out) You can also use this sensor to get digital output from this pin by adjusting the potentiometer. 4 AO ( Analog Out) Based on the intensity of the gas, this pin outputs a 0-5V analogue voltage. Applications Car alcohol alarm Breathalyzer Alarm for exceeded gas level Portable alcohol detector Stand-alone/background sensing device Environmental monitoring equipment

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