First Alert Smoke Alarms with Battery - Plastic White Pack of 2

The alarms feature a built-in lithium-ion battery that provides continuous power for up to a decade. Equipped with an ultra-reliable photoelectric sensor, the smoke alarms detect smoke from slow-burning, smoldering fires while keeping false alarms to a minimum. A patented smoke entry further enhances the detector's reliability by providing a direct path to the smoke sensor. The simple twist-lock mounting system installs easily onto a wall or ceiling, while the tamper-resistant locks help prevent removal of the battery to keep the alarms secure. A loud 85 dB alarm sounds when smoke is detected, and a convenient test/silence button lets you easily check alarm function and mute false alarms. 10-year limited warranty.

• 10-Year lithium-ion battery lasts the life of the alarm
• Slim shape is half as thick as a standard smoke alarm
• Photoelectric technology optimized to detect larger smoke particles produced by smoldering fires and reduce false alarms
• Patented smoke entry system allows for a direct path to the sensor