Natural Gas Detector, denshine High Sensitivity Gas Leak Detector LPG LNG Coal Gas Leak Detector Alarm Monitor Plug-in Gas Alarm with Digital Display Propane/Methane / Combustible Natural Gas Alarm
I plugged it in and the red line lit up. The next day the detector had a zero sign. This is an indicator of gas. I like to feel secure in my home. I have a smoke alarm and a caborn monoxide alarm. This gas alarm completes my home safety devices.