The First Alert PR710 Slim Photoelectric Smoke Alarm with 10-Year Battery helps protect your home by providing up to a decade of uninterrupted monitoring. Today’s home smoke detectors come in two types: ionization vs. photo-electric. If your smoke alarm starts “chirping” or giving off short “beeps,” it usually needs a new battery change. You have purchased a state of the art Smoke Alarm designed to provide you with early warning of improper location. Instead, replace the entire alarm after 10 years have passed. Related: Defective first alert model p1210. If you are installing the Smoke Alarm for use by others, you must leave this manual — or a copy of it — with the end user. It started giving me the three-beep signal, which I can only assume is the low battery signal, on August 3, 2019. Purchased at Home Depot. Clean the Smoke Alarm as described in “Regular Maintenance,” and then test the Smoke Alarm again. These mechanisms come with a battery backup, as well as a mute button. If your smoke alarms are powered by a nine-volt battery, the battery should be replaced every 6 months, while the alarm itself should be replaced once every 10 years. This low-profile smoke alarm uses an ultra-reliable photoelectric sensor to detect smoke from slow-burning, smoldering fires. The date on the back of the unit is 2018 Dec 08, which I assume is the date of manufacture. In the six decades since, we have continued to create innovative products, from the first residential smoke alarm to the first battery operated carbon monoxide alarm. Generally, most smoke detectors use a 9-volt battery for power, though you should always follow the directions that came in your smoke detector manual. First Alert review with Images: I purchased a 2 pack First Alert model P1210 from Costco in April 2018 and installed one in my new home. The First Alert BRK smoke detector is wired directly into your home’s electrical system. Naturally, we’re going to take it apart. Battery smoke detectors run solely on batteries. One of the smoke detectors in the house has started raising a lot of false alarms and was replaced after a 3:30AM episode. Product was supposed to last until 2024. The first step in learning how to change a smoke detector battery is determining which type of alarm you have. Page 1 Be sure to choose a top and Thank you for choosing First Alert® for your Smoke Alarm needs. This particular detector, a First Alert P1210, is a photo-electric detector. The battery backup ensures the warning system works, even if the power is out. operation. They have a sealed battery and cannot be serviced. Models 9120 Printed in Mexico 9120B M08-0134-003 K1 04/07 All First Alert® and BRK® Smoke Alarms conform to regulatory requirements, including UL217 and are designed to detect particles of combustion. For 10-year lithium-powered smoke alarms, you won’t need to replace the battery. There were more expensive than the traditional 9V ones. Replace the battery. 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