• Sealed-In Lithium Battery: Sealed-in lithium power supply; no battery replacement required over the 10 year life of the alarm.

• Photoelectric Sensor: Advanced photoelectric sensor may detect visible particles (associated with smoldering fires) sooner than ionization alarms.

• Self Activation: Alarm automatically activates when attached to the mounting bracket.

• Alarm Memory: Rapidly flashing LED alerts user if the alarm has sounded since the last time the test/reset button was used.

• Test/Hush Button: Tests alarm circuitry and activates Hush features.

• Smart Hush™: Temporarily silences nuisance alarms for approximately 10 minutes.

• LED: Red LED will blink in conjunction with the alarm sound.

• End of Life Warning: Alarm chirps every 30 seconds.

• 10 Year Limited Warranty

Size: 5.75" W x 2" D x 6.25" H