The MQ7 CO Carbon Monoxide Coal Gas Sensor detects the concentrations of CO in the air and outputs its reading as an analog voltage.
The sensor measures concentrations of CO from 10 to 10,000 ppm.
The threshold level for digital output can be easily adjusted using the preset on the board. The MQ7 sensor module can be easily interfaced with Micro-controllers, Arduino and etc.
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.
It is important to note that CO is a poisonous gas that can be dangerous at high concentrations.