Night Hawk Combination Smoke/CO Alarm with Voice/Alarm Warning, (3) AA Batteries

When every second counts, you'll have your warnings spoken to you in a loud-volume voice: Fire, Fire! or Warning! Carbon Monoxide! Two-alarm system also announces Low Battery when batteries need changing. Also includes chirp signal, flashing LED and test/reset button. Uses three AA batteries (included). Power Source(s): (3) AA; Mounting: Ceiling; Wall.