- Photoelectric Sensor
- Hush/Test Feature
- 10 Year Lithium Backup Battery
- Interconnectable (up to 40 Arma smoke alarms and/or heat alarms)
- 10 Year Limited Warranty
This AC powered alarm does not require a battery to operate, although it has an internal 10 year backup battery for continuous operation in case of power outages. This alarm is suitable for living areas, hallways and bedrooms.