MQ-7 Gas Sensor Module – Carbon Monoxide (CO) Detector

The MQ-7 Gas Sensor Module is a high-sensitivity sensor designed for detecting Carbon Monoxide (CO) concentrations in the air. Ideal for safety systems and environmental monitoring, this module is widely used in gas leak detection, home automation, and industrial applications. Its dual output (analog and digital) allows easy integration with microcontrollers such as Arduino, ESP8266, ESP32, and Raspberry Pi.

☁️ Key Features

• 💨 Target Gas: Carbon Monoxide (CO)
• ⚡ Operating Voltage: 5V DC
• 🔌 Outputs: Analog (AO) and Digital (DO)
• 📈 High Sensitivity: Fast response and recovery time
• 🎛️ Adjustable Sensitivity: Via onboard potentiometer
• 💡 Indicator LEDs: Power and digital output status
• ⏱️ Preheat Time: ~60 seconds for stable readings
• 📏 Compact Design: Easy integration into embedded systems

🛠️ Applications

• 🏠 Indoor air quality monitoring
• 🚗 Car CO detection systems
• 📦 Smart home safety alarms
• 🏭 Industrial carbon monoxide detection
• 🔧 DIY and IoT environmental sensing projects

📦 Package Includes

• 1 × MQ-7 Carbon Monoxide Sensor Module

⚠️ Notes

• 🌡️ Allow sufficient preheating time (~60 seconds) before taking reliable measurements.
• 💬 Use in a well-ventilated area and avoid exposure to strong gases not related to CO, as they may affect readings.

The MQ-7 sensor provides a practical and affordable solution for detecting carbon monoxide in a variety of environments, helping to ensure safety and prevent CO poisoning incidents.