Check the listing for details. FIRST ALERT Carbon Monoxide Detector with Digital Temperature Display 8496/OB. Color: White, Condition: Open box, Made in Mexico. Listed at 23.00 USD. Keep your home safe with this First Alert Carbon Monoxide Detector. It features a digital temperature display and an electrochemical carbon monoxide sensor to ensure accurate and quick detection. The unit is powered by a battery, which is included in the package, and has a battery backup feature for uninterrupted functionality. This white unit has a compact design, with an item depth of 0.93 inches and an item width of 4.75 inches, making it easy to install and use. It is a Type Carbon Monoxide Detector and has a unit quantity of 1. The manufacturer warranty may have expired, but the quality and reliability of this product remain unmatched. Get yours today and enjoy a safe living environment.