Which of the following describes a function of a hybrid alarm system?

• A. It increases installation time
• B. Uses resistors for supervision
• C. Only works with manual switches
• D. Exclusively collects data

Answer: (B)

A hybrid alarm system combines elements from both conventional and addressable alarm systems. This unique design allows it to leverage the benefits of both types, making it versatile and effective in various applications.

One of the key functions of a hybrid alarm system is its method of supervision. By using resistors, the system ensures that the wiring is regularly monitored for faults, such as short circuits or open circuits. When a resistor is placed in series with a device, it allows for consistent checking of the loop's integrity. If the resistance changes due to a fault in the wiring or the device itself, the system can immediately detect that issue and trigger an alarm or fault notification. This ability to supervise the circuit enhances the overall reliability and robustness of the system.

This feature is critical in maintaining safety and ensuring a rapid response in the event of an alarm activation or system fault, thus highlighting the importance of resistive supervision in hybrid alarm systems.