Kidde Smoke Alarm:Alarm memory: Flashing green LED indicates origination alarm after condition occurs. Alarm memory also incorporates an energy management feature that "shuts down" the memory function if AC power is absent. This helps reduce battery drain, especially during the construction phaseProvides 2 tamper-resistant options: The unit can be locked to the mounting bracket to prevent the alarm from being removed from the ceiling or wall. The battery door can also be locked to prevent battery removal. Neither option requires the use of additional componentsBattery door: Provides easy access, which reduces the installation time and battery replacement time. Unique design ensures owner is aware of battery backup, because the door will not close if there is no battery or if battery is installed incorrectlySmart interconnect: Interconnects up to 24 Kidde devices including smoke alarms, CO alarms and heat detector. The interconnect system should not exceed the NFPA interconnect limit of 12 smoke alarms and/or
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