Product Description Kidde Smoke Detector with Long Life Lithium Battery, LED Lights & Replacement Alert, model i9010, features ionization sensor technology to help protect you and your family from the dangers of smoke and fire. This smoke alarm is battery operated with a sealed lithium battery that lasts for approximately a decade, (so you’ll never have to change out the batteries during the lifetime of the unit) the smoke alarm provides reliable detection, even during power outages. Kidde recommends that you attach at least one smoke detector to the ceiling of each level in your home and inside and outside of each bedroom or sleeping area to help keep your family safe.Flashing red LEDs indicate modes of operation: Standby Mode - flashes every 40 seconds to indicate the smoke alarm is operating properly; Alarm Mode - alarm senses products of combustion; Memory - indicates the alarm has been activated; and Hush™ mode - temporarily silences nuisance alarms. This Kidde smoke alarm, battery operated is UL Certified with a 10-year limited warranty. Meets requirements of UL217, NFPA72, The State of California Fire Marshal, NFPA 101, FHA, and HUD. Amazon.com No need to worry about faulty batteries with the Kidde i0910 10-Year Sealed Lithium Battery-Operated Smoke Alarm. This worry-free alarm contains a sealed-in lithium power supply that lasts the lifetime of the unit. Dependable and easy to install, this no-maintenance alarm saves on labor and battery costs over its lifetime. Save up to $60 in Battery Replacement Costs This worry-free smoke alarm can save you a lot of time and money over its lifetime (an estimated $60 over the 10 year life of the alarm). This alarm can save you--and the local landfill--from the cost, hassle, and waste of lots of batteries. This smoke alarm is also a great choice for hallways and high ceilings, where changing batteries can be especially difficult. Never Replace a Battery Again. View the 10-year worry-free smoke alarm. i4618 Never change a battery again. The Kidde Sealed Lithium Smoke Alarm saves you up to $60 and eliminates battery replacement hassles. Product Highlights No battery replacement for the lifetime of the alarm Powered by a tamper-free sealed lithium power supply Self-Activation automatically activates unit when attached to bracket Smart Hush silences alarm in non emergencies Money-saving alarm is great for homes and rental properties This alarm uses ionization sensing technology for the smoke alarm. Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Kidde strongly recommends that both ionization and photoelectric smoke alarms be installed to help insure maximum detection of the various types of fire that can occur within the home. Great for Homes and Rental Properties This tamper-free alarm prevents battery or alarm removal, eliminating worry about unauthorized battery removal or unauthorized deactivation of the alarm. Also, this alarm is a good choice for rental properties and high-density dwellings, as its sealed tamper-free design prevents theft, while also reducing labor and material costs. This helps to ensure that the property and inhabitants are protected by a fully operational alarm. Easy to Install with Self Activation The innovative automatic activation of this alarm is unlike any other smoke alarm design. The alarm will automatically activate when it is attached to the mounting bracket; there are no pull tabs and no switches--everything is automatic. At the end of the alarm life, the unit will chirp, indicating the alarm is in need of replacement. You can use a simple tool, such as a screwdriver, to deactivate the unit, stopping the low-battery chirp and making the alarm safe for disposal. The sealed-in board-mounted batteries will power the unit for its complete 1