The P4010ACS-W is an AC/DC powered smoke 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 “Replace alarm” at end of alarm life, and “Hush mode activated” when a nuisance alarm is silenced. The three color LED ring helps users quickly determine standby, alarm, or error mode of the alarm. Kidde P4010 Series Alarms contain 10-year tamper proof batteries that eliminate the need for battery replacement, and ends worry over unauthorized removal. Users are further shielded from late night battery chirps by the unit’s Ambient Light Sensing feature, which establishes a day/night cycle and prevents alarm chirping in dark conditions. Wire-Free or hardwire interconnect triggers each connected alarm in the home to sound once smoke is detected. This can provide more time to react. The National Fire Alarm and Signaling Code (NFPA 72) has required smoke alarms in new homes to be interconnected since 1989, which traditionally involves running wiring to each alarm. Older and remodeled homes can now be updated to current standards without having to run new interconnect wiring to each alarm (AC power wiring still required). Existing networks of interconnected alarms can be expanded with use of a single P4010ACS-W and additional Kidde Wire-Free alarms. Additional benefits and features are available when used in conjunction with the Kidde RemoteLync Bridge, which connects P4010 Wire-Free alarms via your home’s Wi-Fi to your smart device. Additional information such as battery life and sensor health status are available from each assigned room location. Weather alerts, and intruder alerts (when used with the Kidde RemoteLync camera), can be sent to each connected alarm, creating an easy to install fire – security – weather – warning system from one network of devices.