MQ-4 Gas Sensor ModuleThis is a simple to use MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module which can sense the presence of Compressed Natural Gas(CNG), methane(CH4), etc. in the air. The module uses our MQ-4 sensor. It simplifies the interface to the odd pin spacing of the sensor and provides the interface through standard 4 x 0.1″ header pins.It provides an analog output corresponding to the concentration of the gases in the air and an easy-to-use digital output. The onboard potentiometer can be used to set the maximum gas concentration beyond which the digital output gets triggered. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.Just power the module with 5V set the threshold and you can start getting the gas concentration of the air around the sensor! An onboard LED signals the presence of any gas.The digital output can be easily interfaced with microcontrollers and other circuits. The analog output can be hooked up to an ADC of a microcontroller to get a wide range of sensor readings. This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air.MQ-4 Gas Sensor SpecificationsSensor Type SemiconductorPower requirements: VCC – 5V±0.1DO 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 4VDetection Gas: Natural gas/MethaneDetection Concentration: 200-10000ppm (Natural gas / Methane)Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)Heater consumption: less than 750mwOperating temperature: 14 to 122 °F (-10 to 50°C)RH Related humidity less than 95%RhO2 Oxygen concentration is 21% (standard condition) – Oxygen concentration can affect sensitivityLoad resistance: 20KΩSensing Resistance Rs: 10KΩ- 60KΩ (1000ppm CH4)Preheat time: Over 24 hourStandard Encapsulation Bakelite, Metal capPinout ConfigurationPin NameDescriptionVCCThis pin powers the module, typically the operating voltage is 5VGNDUsed to connect the module to system groundDigital Out (DO)You can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometerAnalog Out (AO)This pin outputs 0-5V analog voltage based on the intensity of the gasHow does MQ-4 sensor work?The MQ-4 Gas Sensor Module works primarily by sensing the amount of methane or natural concentration gas in the air. Therefore immediately the mq4 senses methane, the sensor’s analog pin produces an analog signal similar to the quantity of CH4 in the air.For related video, click hereAlso do not forget to check out our other Gas / Air modules in the Gas & Air section. Thank you. এটি MQ-4 উচ্চ সংবেদনশীলতা গ্যাস মিথেন (CNG) ডিটেক্টর সেন্সর মডিউল ব্যবহার করা সহজ যা বাতাসে সংকুচিত প্রাকৃতিক গ্যাস (CNG), মিথেন (CH4) ইত্যাদির উপস্থিতি অনুভব করতে পারে। মডিউলটি আমাদের MQ-4 সেন্সর ব্যবহার করে। এটি সেন্সরের বিজোড় পিন ব্যবধানে ইন্টারফেসটিকে সরল করে এবং স্ট্যান্ডার্ড 4 x 0.1″ হেডার পিনের মাধ্যমে ইন্টারফেস সরবরাহ করে।MQ-4 Gas Sensor Module best price in Bangladesh
