First Alert(R) 1039800 Ionization Smoke Alarm with Escape Light *Ionization Smoke Alarm with Escape Light *• Ionization smoke-sensing technology with enhanced smoke-gathering design;• Escape light shines to lead to safety;• Loud 85dB alarm;• Smoke detector features single test/silence button for simple operation;• Side-load battery compartment & theft-prevention lock;• 10-year limited warranty;• Includes 9V battery & mounting bracket; * WARRANTY: TEN YEARS