Illuminate your path to safety with the First Alert SM210L Sealed 10-Year Battery Smoke Alarm with Safety Path Light. The SM210L smoke alarm also features First Alert's Precision Detection advanced sensing technology and meets industry standards. The 10-year battery means no battery replacements for a decade.

• Sensor Type: Photoelectric
• Battery Type: 10 year battery, Lithium Metal
• Warranty: 10 Years Limited