Which alarm system is used to protect large commercial and industrial facilities and is connected to a common receiving point somewhere on the facility?

• A. Central Station Alarm System
• B. Local Alarm System
• C. Wireless Alarm System
• D. Proprietary Alarm System

Answer: (D)

The main idea is how the alarm signal is monitored and who controls it. A proprietary alarm system is owned and operated by the facility itself, with a dedicated receiving point on the property—often in a security or operations center—that monitors alarms and coordinates on-site responses. This on-site receiving point gives immediate visibility and direct control, which is especially valuable for large commercial and industrial facilities with complex security needs and the ability to integrate with other building systems.

If the system were a central station alarm, the signals would go to a remote monitoring center outside the facility, which can introduce delays and less direct on-site control. A local alarm system would only produce audible or visual alerts on-site without a centralized monitoring point. A wireless system relies on radio signals to an external receiver and is generally more susceptible to interference and range issues, which is less ideal for large facilities that require stable, centralized monitoring.