{"product_id":"mq-135-gas-sensor-module-for-nh3-alcohol-benzene-smoke-co2-detector-module","title":"MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module","description":"\u003cmeta name=\"description\" content=\"Buy MQ135 Gas Sensor Module For NH3 Alcohol benzene smoke CO2 D online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eMQ-135 Gas Sensor Module - NH3, Alcohol, Benzene, Smoke \u0026amp; CO2 Detector\u003c\/h1\u003e\n\u003cp\u003eDetect hazardous gases and monitor air quality with the MQ-135 Gas Sensor Module from The Engineer Store, Bengaluru. This versatile sensor responds to ammonia (NH3), alcohol vapors, benzene, smoke, and carbon dioxide (CO2), making it ideal for environmental monitoring, safety systems, and IoT-based air quality projects. Features both analog and digital outputs for flexible integration with Arduino, ESP32, Raspberry Pi, and other microcontrollers. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eMQ-135 Semiconductor Gas Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetectable Gases\u003c\/td\u003e\n\u003ctd\u003eNH3, Alcohol, Benzene, Smoke, CO2, NOx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (A0) \u0026amp; Digital (D0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Output Voltage\u003c\/td\u003e\n\u003ctd\u003e0V - 5V (proportional to gas concentration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Output\u003c\/td\u003e\n\u003ctd\u003eTTL level (High\/Low, threshold adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e10 - 1000 ppm (varies by gas type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreheat Time\u003c\/td\u003e\n\u003ctd\u003e~20 seconds (recommended 24-48 hours for initial burn-in calibration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater Power Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 800 mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer for digital threshold tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED \u0026amp; Digital Output Trigger LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393 dual comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e~32 mm x 20 mm x 22 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, A0 (Analog Out), D0 (Digital Out)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to 50 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and other MCUs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Gas Detection:\u003c\/strong\u003e Sensitive to NH3, alcohol, benzene, smoke, CO2, and other harmful gases - one module for broad air quality monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Analog output (A0) provides continuous voltage proportional to gas concentration; digital output (D0) gives a clean HIGH\/LOW signal when the adjustable threshold is crossed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Potentiometer:\u003c\/strong\u003e Easily fine-tune the digital trigger sensitivity without any additional components - just turn the trimpot with a screwdriver.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLM393 Comparator:\u003c\/strong\u003e Reliable and fast signal conditioning ensures stable digital output with minimal noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus LEDs:\u003c\/strong\u003e Power indicator confirms the module is energized; a second LED lights up when the digital threshold is triggered for instant visual feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 4-Pin Interface:\u003c\/strong\u003e VCC, GND, A0, and D0 - connect directly to any microcontroller's analog and digital input pins with no external circuitry required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response \u0026amp; Recovery:\u003c\/strong\u003e Quick detection response time and reasonable recovery time allow near-real-time gas concentration tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works seamlessly with 5V logic (Arduino Uno, Mega, Nano) and can be interfaced with 3.3V boards (ESP32, ESP8266) using a voltage divider on the analog output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Breadboard-Friendly:\u003c\/strong\u003e Small form factor with standard 2.54 mm pin headers fits directly into breadboards and prototyping setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic MQ-135 modules sourced directly from trusted and authorized component distributors.\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available within Bengaluru.\u003c\/li\u003e\n\u003cli\u003eExpert technical support included - get help with wiring, code, calibration, and project integration via email or WhatsApp.\u003c\/li\u003e\n\u003cli\u003e7-day warranty on manufacturing defects with hassle-free replacement on any defective units.\u003c\/li\u003e\n\u003cli\u003eThoroughly tested before dispatch to ensure every module works out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndoor Air Quality Monitor:\u003c\/strong\u003e Build an IoT air quality station using Arduino or ESP32 that measures harmful gas levels in your home, office, or classroom and displays readings on an LCD or sends alerts to your phone via Blynk or MQTT.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Smoke \u0026amp; Gas Alarm:\u003c\/strong\u003e Create a safety alarm system that triggers a buzzer, sends SMS\/email notifications, or activates an exhaust fan when dangerous gas concentrations like smoke\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eMQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773663019171,"sku":"TES-EV102217","price":107.06,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/612qxum_ktl._sl1001.jpg?v=1701073623","url":"https:\/\/www.theengineerstore.in\/zh-hant\/products\/mq-135-gas-sensor-module-for-nh3-alcohol-benzene-smoke-co2-detector-module","provider":"The Engineer Store","version":"1.0","type":"link"}