First Alert Smoke Detector Alarm | Hardwired with Backup Battery The Smart Choice for You and Your Family This First Alert hardwired smoke alarm includes a 9-volt battery backup that continues to protect you in the event of a power failure. The detector features an ionization sensor for detection of smoke and fast-flaming fires, as well as a loud, 85-decibel alarm. One button silences any nuisance alarms, and also tests detector functions, while lights indicate if the alarm detects smoke. ************************************* Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm To ensure complete protection make sure to place one on each level of your home and in each bedroom Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected Simple to use, with a single test/silence button, and side-load battery compartment tamper-resistant locking brackets and universal mounting brackets make installation easy Rigorously tested to meet UL standards120V AC power with 9V battery backup to keep alarm functioning during power outage Makes an excellent gift. àWe Offer *FREE* Quick Fast In a Hurry To Your Door Shipping We Ship FREE to the Lower 48 States Only, I Cannot Combine Shipping. *********************** If you are located outside the United States, please contact us before you make a purchase. Please let us know the item you are considering purchasing along with your Full Address to see if our supplier can ship to your Destination. We will reply with a Shipping Estimation.Calculated: Cost Varies By Buyer Location Free Drug Card With This Order For People Pets Receive Discounts up to 85%, with average savings of 15% on brands and 55% on generics at over 80% of pharmacies in the country. No Medications are Excluded......Your entire Household can use it. No Claims to File ........You can use it even if you have Insurance.