First Alert/Jarden SMOKE ALARM

First Alert brand. Super bright KRYPTON Escape Light turns on when detector alarms. Has dual ionization sensor, 30 day low battery signal. Safe and easy to test - just wave flashlight beam over detector\'s gold test button. Unit can be tested on ceilings up to 20 feet high. Can also be tested by pressing button. Supplied with two 9V batteries. 10 year limited warranty. Clamshell package. UL listed.