{"product_id":"mq-7-carbon-monoxide-gas-sensor-module-compoden-india","title":"MQ-7 Carbon Monoxide Gas Sensor Module - Compoden India","description":"\u003ch1\u003eMQ-7 Gas Sensor Module for Carbon Monoxide\u003c\/h1\u003e\n\u003cp\u003eThe MQ-7 gas sensor module is designed to detect carbon monoxide (CO) concentrations in the air. It is commonly used in air quality monitors, gas leakage alarms, and portable safety detectors. The module provides an analog output proportional to gas concentration, making it easy to integrate with microcontrollers.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Gas\u003c\/td\u003e\n\u003ctd\u003eCarbon monoxide (CO)\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\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e20 – 2000 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeater Resistance\u003c\/td\u003e\n\u003ctd\u003e33 Ω ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePreheat Time\u003c\/td\u003e\n\u003ctd\u003e2 – 5 minutes (cycle)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog voltage (0 – 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eStandalone carbon monoxide alarm with buzzer\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/pm2-5-air-quality-monitor-kit\"\u003ePortable air quality monitor with LCD display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eIoT gas leakage detector with notifications\u003c\/li\u003e\n  \u003cli\u003eSmart ventilation controller for enclosed spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis module operates at 5V, making it directly compatible with Arduino Uno, Nano, and Mega boards. For 3.3V systems like ESP32 or Raspberry Pi, use a level shifter or voltage divider on the analog output. It pairs well with LCD displays, buzzers, and relay modules for alert systems.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V, GND to ground, and AOUT to an analog input pin. The module draws up to 350 mW during heating cycles; ensure your power supply can handle the load. For best accuracy, allow the sensor to preheat for 2–5 minutes before taking measurements. Avoid exposing the sensor to silicon vapors or corrosive gases to prolong lifespan.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the MQ-7 module works directly with 5V Arduino boards like Uno and Nano. Connect AOUT to any analog pin to read CO levels.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long does the sensor need to warm up?\u003c\/summary\u003e\u003cp\u003eInitial preheating takes 2–5 minutes for stable readings. For precise applications, allow 48 hours of continuous operation for complete stabilization.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan this sensor detect other gases?\u003c\/summary\u003e\u003cp\u003eIt is primarily sensitive to carbon monoxide but may show minor cross-sensitivity to hydrogen, methane, and alcohol vapors. For dedicated CO detection, use in controlled environments.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445108793709,"sku":"CDN-0394","price":120.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_914b91c8-9716-47c7-a881-1c237fb2b537.jpg?v=1781513346","url":"https:\/\/compoden.com\/products\/mq-7-carbon-monoxide-gas-sensor-module-compoden-india","provider":"Compoden","version":"1.0","type":"link"}