The Kidde P4010LDCS-WCA is a 10-year, sealed battery smoke alarm that features wireless interconnect capability, enhanced intelligibility for users and an LED safety light that illuminates when the alarm sounds to help guide your way to safety. The 10-year tamper proof batteries eliminate the need for battery replacement, and ends worry over unauthorized removal. 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 colour LED ring helps users quickly determine standby, alarm, or error mode of the alarm. Wireless interconnect triggers each connected alarm in the network to sound once smoke is detected, which can provide more time to react to a hazard. Kidde Wireless units can be joined easily with the touch of one button.