There are two types of residential fire detection systems: heat and smoke detectors. The basic residential detection system, according to NFPA 74, relies primarily on the use of smoke detectors.
Alarms and detectors. The first sign you might have if there is a fire elsewhere in the building is a fire alarm or detector going off. ... Smoke. An obvious sign of fire is smoke – as the old adage goes: “there's no smoke without fire”. ... Smell. ... Loud noises. ... Hot door and door handle.
