What does the term "hardwired" mean in the context of security systems?

In the context of security systems, the term "hardwired" refers to security devices being connected directly through physical wiring. This implies that the devices, such as cameras, sensors, alarms, and control panels, are linked to a central control unit or power source using cables. Hardwired systems often provide a more stable and secure connection since they are less vulnerable to interference and hacking compared to wireless systems. This physical connection typically ensures reliable communication and power supply, making them suitable for many residential and commercial applications.

The other options highlight different types of connections or system designs that do not involve direct physical wiring. For instance, devices connected through wireless signals are typically referred to as "wireless" systems, and portable devices for temporary security do not fit the definition of a hardwired installation. Similarly, remote systems controlled via a smartphone emphasize a different aspect of security management that relies on internet connectivity rather than a physical wiring setup.