MQ-7 Carbon Monoxide Gas Sensor Module

The MQ-7 Gas Sensor Module is specifically designed to detect carbon monoxide (CO) gas in the surrounding environment. Carbon monoxide is a dangerous and colorless gas commonly produced by incomplete combustion of fuels. This module provides analog and digital outputs, allowing easy integration with development boards such as Arduino, ESP8266, and ESP32. It features an onboard comparator and adjustable potentiometer for setting the gas detection threshold. The MQ-7 sensor is widely used in carbon monoxide detection systems, industrial monitoring devices, smart home safety systems, and electronics learning projects. Key Features Detects carbon monoxide (CO) gas Adjustable detection sensitivity Analog and digital output signals Onboard LED indicators Easy interface with microcontrollers Suitable for Arduino and IoT projects Technical Specifications Parameter Value Sensor Type MQ-7 Gas Sensor Operating Voltage 5V Detectable Gas Carbon Monoxide (CO) Output Type Analog and Digital Comparator LM393 Preheat Time ~20 seconds Interface Pins VCC, GND, DO, AO Pin Configuration Pin Description VCC Power Supply (5V) GND Ground DO Digital Output AO Analog Output What’s in the Box 1 × MQ-7 Gas Sensor Module Ideal For Carbon monoxide detection systems Home safety monitoring Industrial gas monitoring Arduino and IoT projects Educational electronics experiments