This is a small and elegant wall plug in gas alarm. Have you ever left your stovetop gas on? If so, this alarm will be triggered - it will smell the gas and trigger the alarm to prevent explosion levels. This gas leak detector suitable for almost all applications with combustible gases, methane, natural gas, biogas, propane, artificial gas, liquefied petroleum gas. The alarm has a Red Flashing LED & 75 db Sound Alarm. When the natural gas concentration is higher than 5% LEL , it will alert you to a gas leak. The alarm is very small and power efficient as it consumes less than 1W. Simply plug-In the device to wall and thats it.