Battery Powered Night Hawk Combination Smoke/CO Alarm with Voice/Alarm Warning

Battery Powered Night Hawk Combination Smoke/CO Alarm with Voice/Alarm Warning Two-alarm system features a loud volume voice warning: “Fire, Fire!” or “Warning! Carbon Monoxide!” Low-battery indicators include “Low Battery” announcement, chirp signal and flashing LED. Test/reset button. Uses three AA batteries (included). Maximum Height: NA; Battery: 3 AA (included); Wall-Mountable: NA; Universal Mounting Bracket: Yes.