Item Condition New Item Location Ships from our warehouse in Las Vegas, Nevada, 89102, USA Fast FREE Shipping We handle all paid orders within 1 business day. Best Offers Accepted Offers are reviewed at the close of business each night. We accept reasonable offers for - Multiple units of the same item - Errors or condition changes within our listing - Combining shipping for 2 or more separate orders Return Policy We offer a 30 day return window from when you receive the item. Items must be in the same condition and in original packaging. Seller Warranty - We Protect Against Defects Our in-house technicians evaluate and refurbish every electronic item we list. We are proud to offer our customers a 30-day warranty against defects. Contact us directly by selecting "I have a question about using my item or I want to send the seller a message." We are eager to hear from our customers. Product Description 10-Year Battery: This smoke alarm comes with a sealed lithium battery with a full 10-year product life, giving you confidence that you and your family will be protected for a decade Test/Silence Button: Allows you to test the device to ensure its LED and buzzer are working properly, and silence unwanted alarms with the simple push of the button Self-Test Function: The smoke detector has an automatic self-test function that checks its sensor, electronics, and battery every 60 seconds to ensure that it is functioning properly Wide Coverage and Loud Sound: The fire alarm covers a large floor area of 215?430 ft (20?40 m); when it detects a problem, it emits a loud sound of over 85 decibels, enough to wake up even the deepest sleepers, anywhere in the house