Kidde® 20SD10-CA Alarm Offers A Modern Design Ideal For All Living Spaces. Cutting Edge Technology Sends Fast Alerts That Give Your Family More Time To Get Out Safely And Enhanced Sensing Technology Reduces False Alarms Often Caused By Cooking. Comprehensively Tested And Designed To UL/ULC Standards For Safety And Reliability. This Kidde Alarm Is Powered By A 10-Year Battery So You Never Have To Change A Battery. Plus, It's Self-Testing And Easy To Install With The Included Twist-And-Click Mounting Bracket. Equipped With End-Of-Life Notifications, The Alarm Will Beep To Remind You It's Time To Replace It 10 Years After It Is Powered. • Red LED Will Flash In Sync With The Alarm Pattern (3 Long Beeps)• Photoelectric Smoke Sensor Detects Visible Fire Particles Associate With Slow, Smoldering Fires Sooner Than An Ionization Sensor• Worry-Free 10-Year Sealed Lithium Battery No Battery Changes For 10 Years. Avoids Inconvenient Battery Replacements Over The Life Of The Device• Self-Testing Alarms For Added Assurance, Internal Components Ensure Alarm Is Always Operating As Expected• Simple Installation Easy Install With Included Twist-And-Click Mounting Bracket• End-Of-Life Notifications This Alarm Beeps To Remind You It's Time To Replace It 10 Years After It Is Powered• Model #20SD10-CA• Mfg #21031471
