MQ7 Gas Sensor

The MQ7 Gas Sensor Module is a high-sensitivity sensor specifically designed to detect carbon monoxide (CO) concentrations in the air. It is ideal for carbon monoxide detection systems, air quality monitors, smart home applications, and Arduino-based safety projects. The MQ7 sensor operates using a dual heating cycle for better accuracy and utilizes SnO₂ (tin dioxide) as its sensitive material. It offers both analog and digital outputs, enabling easy integration with Arduino, Raspberry Pi, ESP32, and other development platforms. With its high accuracy, adjustable sensitivity, and long life, the MQ7 is a reliable and cost-effective solution for monitoring toxic CO gas in various environments.

Key Features:

• Specifically designed for carbon monoxide (CO) detection

• High sensitivity and fast response time

• Dual heating cycle for improved detection accuracy

• Supports both analog and digital output

• Adjustable sensitivity using onboard potentiometer

• Compatible with Arduino, Raspberry Pi, ESP8266, ESP32

• Low power consumption

• Long life and stable operation

• Easy to interface and use

Specifications:

• Model: MQ7 Gas Sensor

• Gas Detected: Carbon Monoxide (CO)

• Operating Voltage: 5V DC

• Detection Range: 20 – 2,000 ppm (CO concentration)

• Load Resistance: Adjustable

• Heater Voltage: 1.5V (low) and 5V (high) in cycles

• Response Time: < 60 seconds

• Preheat Time: 60 seconds

• Operating Temperature: -10°C to +50°C

• Output Type: Analog & Digital

• Dimensions: Approx. 32mm x 22mm x 27mm (module form)