Kidde P4010ACSCO-W Hard Wired Smoke/CO Combo W/ Wireless Interconnect 10YR 21027323

10-Year Sealed Lithium Battery - Eliminates late night battery chirp! Supervised Wire-Free Interconnect: Proprietary radio signal joins multiple alarms together, so when one alarm sounds they all sound. User is alerted if an alarm loses connection to the network. Voice Notifications: Unit verbally announces “Fire!†and other alerts such as “Replace Alarm,†which helps the user better understand current status of the unit. Compatible with RemoteLync Bridge: Connect to the Kidde app for additional features and benefits. 10-Year Limited Warranty  The P4010ACSCO-W is an AC/DC powered smoke and carbon monoxide (CO) alarm with 10 year battery backup that features supervised wire-free interconnect capability and provides enhanced intelligibility for users. The voice warning feature accompanies the 85dB tone during an alarm event, and helps reduce confusion with verbal announcements such as ÀœReplace alarmÀ at end of alarm life, and ÀœHush mode activatedÀ when a nuisance alarm is silenced. The three color LED ring helps users quickly determine standby, alarm, or error mode of the alarm.