It is literally a means or method by which something is secured through a system of interworking components and devices.home-security
In this instance, we are talking about home security systems, which are networks of integrated electronic devices working together with a central control panel to protect against burglars and other potential home intruders.
A typical home security system includes:
A control panel, which is the primary controller of a home security system
Door and window sensors
Motion sensors, both interior and exterior
Wired or wireless security cameras
A high-decibel siren or alarm
A yard sign and window stickers