Which two types of alarm systems are most frequently used for residential security?

The choice of intrusion alarms and fire alarms represents the primary focus of residential security systems due to their essential roles in safeguarding homes.

Intrusion alarms are specifically designed to detect unauthorized entry into a property. They serve as a deterrent to potential burglars and provide immediate alerts to homeowners and law enforcement when a breach occurs. This type of alarm system typically involves door/window sensors, motion detectors, and sometimes integrated smart technology to enhance security vigilance.

Fire alarms play an equally critical role in residential settings by detecting smoke or heat, thereby alerting occupants of a potential fire hazard. The inclusion of fire alarms in security systems is not only a matter of safety but is often mandated by building codes in many areas, reinforcing their necessity in residential security planning.

While other options like surveillance cameras, environmental sensors, audio alarms, and video monitoring enhance security, they do not typically provide the fundamental protections that intrusion and fire alarms do. Surveillance cameras can record events and help monitor activities but do not respond actively to breaches. Environmental sensors check conditions like water leakage or gas levels, which, while important, do not directly protect against intrusions or fires. Therefore, the combination of intrusion and fire alarms encompasses the core aspects of safety and security needed in most residential environments.