Residential fire alarm system. According to statistics from National Fire Agency, Ministry of the Interior, casualties from residential fires are attributed to factors such as discovering fire too late and difficulties in self-evacuation. If homes are fitted with residential fire alarm system, the sound of smoke or heat detectors will be able to warn occupants who are soundly asleep or unaware of the fire, so that they can react and escape accordingly. Besides preventing the fire from escalating, the system will also help minimize casualties. Consequently, fitting residential fire alarm systems at homes is mandatory in order to elevate the level of self-protection.