Gas alarms are divided into industrial and residential types. Unlike gas alarms used in industrial and commercial settings, residential gas alarms are typically required to quickly detect and alarm at low concentrations of combustible gas leaks. They must also be immune to kitchen fumes, simple to install and maintain, and easy to use.

    We already know that the core component of a gas alarm is the combustible gas sensor. So, what type of sensor can meet the performance requirements of a residential gas alarm?

    Residential combustible gas alarms typically use semiconductor or catalytic combustion sensors as detection elements. Semiconductor-type combustible gas sensors have a low detection limit and a long service life. Furthermore, the detection process involves only gas adsorption and desorption. Heavy kitchen fumes rarely remain on sensitive surfaces, thus having no impact on their service life. These sensors are the best choice for residential alarms.

Semiconductor combustible gas sensor

MQ-D4B Flat semiconductor sensor

MQ-G4 Semiconductor CH4 Sensor

TX110-A Household Gas Module

    Semiconductor gas sensors offer advantages such as accurate measurement, easy maintenance, flexible application, and high reliability. They are currently one of the most widely produced and popular gas sensors in the world. Initially, semiconductor gas sensors were used to detect methane, liquefied petroleum gas, and hydrogen. In recent years, they have expanded to include environmental protection, gas leak detection, initial fire alarms, and engine fuel control.