MQ-7 Gas Sensor Module

The MQ-7 gas sensor module is a device that can detect the presence of carbon monoxide (CO) gas in the air. It is commonly used in applications such as gas leak detectors, safety devices, and industrial control systems. The MQ-7 sensor operates by using a chemical reaction between the CO gas and a conductive metal oxide to produce a current. The magnitude of the current is proportional to the concentration of CO gas in the air. The gas sensor can be used to detect CO gas concentrations in the range of 20-2000 ppm. It is important to note that CO is a poisonous gas that can be dangerous at high concentrations. It is recommended to use the MQ-7 sensor with caution and to take appropriate safety measures when working with it.

This module provides both digital and analog outputs.The threshold level for digital output can be easily adjusted using the preset on the board. The MQ-7 sensor module can be easily interfaced with microcontrollers, Arduino and etc.

Read our blog MQ sensor where we explained what is a gas sensor, what is 1ppm equal to, MQ sensor list of different series and their features.

Applications:

• Domestic gas leakage detector
  
• Industrial CO detector
  
• Portable gas detector

Standard Test Conditions of MQ7 Gas Sensor

• Temperature:20C 2C
• Humidity:65% 5% RH
• Standard Test Circuit: Vc:5.0V 0.1V; Vh(high):5.0V0.1V
• Vh(low):1.5V0.1V