The physical constitution and sensing method of sensors can differ significantly depending on their intended surroundings and applications. The metal oxide based gas sensor is one of the most extensively used gas sensors for hazardous identification and smoke detection. A chemiresistor is used in this sort of sensor, which comes into contact with target gasses and reacts. When metal oxide gas sensors come into contact with gases including carbon monoxide, hydrogen, methane, and butane, their electrical resistance increases. Oxide-based sensors are used in the majority of home-based smoke detection systems.
There are different types of sensors for calculating various parameters, and a gas sensor is one of them. Different gas sensors are used to detect gases such as oxygen, carbon dioxide, nitrogen, methane, and others. They can also be found in devices used in workplaces and offices to detect harmful gas leaks, monitor air quality, and so on.