• No need to replace the backup battery throughout the life of the alarm

• Voice warning

• Hush button (alarm silence)

• End of life chirp from power on

• Interconnection of up to 24 units (18 can be initiators) when an alarm is triggered, all are triggered

• Practical, the battery is never replaced throughout the life of the alarm

• Sealed lithium backup battery lasts 10 years, providing continued protection in the event of a power outage