MQ-7 Carbon Monoxide Gas Detector Sensor Module

The MQ-7 Carbon Monoxide (CO) Gas Detector Sensor Module is a high-accuracy electrochemical device engineered specifically for tracking toxic indoor gas levels. Utilizing a dual-voltage heating cycle technique, this module alters its internal temperature to cleanly absorb and detect Carbon Monoxide (CO) concentrations ranging from 10 to 1000 ppm. The onboard carrier electronics provide a versatile dual-output layout: a 0-5V Analog Output (AO) for tracking real-time concentration curves and a Digital Output (DO) managed by an LM393 comparator with an adjustable threshold potentiometer for instant binary trigger alerts. It operates on a standard 5V power supply, making it an ideal choice for smart home safety alarms, industrial ventilation monitoring systems, and automated IoT environmental nodes paired with Arduino, ESP32, or Raspberry Pi platforms.

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Tags MQ-7 CO sensor carbon monoxide detector module gas sensor MQ7 air quality monitoring mq 7 mq7 mq 7 gas sensor mq7 gas sensor carbon monoxide sensor co detector module gas sensor

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Product Details :

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Made In :	India

The MQ-7 Gas Sensor Module is specifically designed for detecting Carbon Monoxide (CO) gas in the environment. It is widely used in safety systems for monitoring CO leakage in homes, industries, and vehicles. The module provides both analog and digital outputs, allowing easy integration with Arduino, ESP32, and other microcontrollers for real-time monitoring and alert systems.

Key Features

Specialized for Carbon Monoxide (CO) detection
Dual output: Analog (A0) and Digital (D0)
Adjustable sensitivity via onboard potentiometer
High sensitivity and fast response
Onboard comparator (LM393) for digital output
LED indicators for power and detection
Easy interface with Arduino and IoT platforms

Technical Specifications

Parameter	Specification
Sensor Type	MQ-7 Gas Sensor
Detectable Gas	Carbon Monoxide (CO)
Operating Voltage	5V DC
Output Type	Analog + Digital
Preheat Time	~20 seconds (recommended longer for stability)
Sensitivity	Adjustable
Interface	4-pin (VCC, GND, A0, D0)
Comparator IC	LM393