It’s common sense by now that everyone should have smoke detectors through out their home. In the Ontario building code, it is law that smoke detectors are installed during the construction of every new home.
If you have a security system, than why not also have alarm smoke detectors installed as well?
Unlike regular hard wired or battery operated detectors which just make noise and alert you of smoke or fire, smoke detectors connected to a monitored security system will send a fire code down to the monitoring station who will in turn dispatch the fire department while you are away!
Who will hear your non monitored smoke detectors when you are not home?