Option to select one technology only (heat or smoke) or both technologies (heat and smoke) Can also be used as a standalone detector Built-in soun...

Option to select one technology only (heat or smoke) or both technologies (heat and smoke) Can also be used as a standalone detector Built-in sounder Test button surrounded with status LED 8 selectable sounder tones 5 years estimated battery life running on 2 batteries 2 additional battery slots available to further extend battery life EN14604:2005/AC:2008 and BS 5446-2:2003 certified