Check the listing for details. NEW Firex 46182 AC Smoke Alarm with 9 Volt Battery Back-up & False Alarm Control. Color: White, Condition: New, Made in Mexico. Listed at 54.99 USD. The NEW Firex 46182 AC Smoke Alarm with 9 Volt Battery Back-up is a reliable and essential home security device that provides peace of mind against potential fires. This smoke alarm features a 9-volt battery backup, ensuring continuous protection even during power outages. With a sleek white design and compact dimensions, it is easy to install and blend seamlessly into any home decor. Manufactured in 2007 by the trusted brand Firex, this smoke alarm comes with a one-month manufacturer warranty. Additionally, its operating sound rating of 90 dB guarantees a clear and effective warning in case of emergencies. What you see in the pictures is exactly what it is for sale and nothing else!