The DeNova Detect Natural Gas Alarm (Model DD620NV-CTR) is a plug-in detector designed to alert you to dangerous levels of natural gas or methane in your home. Dimensions: 3.8"W x 1.6"D x 3.8"H. Features a 10-year sealed battery backup, voice alert, and LED status indicators for reliable, low-maintenance protection. Meets UL 1484 standards and is suitable for kitchens, utility rooms, and garages. In like-new condition in original box with no damage.