What does "dual path communication" refer to in alarm systems?

Dual path communication in alarm systems refers to the use of two different methods to transmit alarm signals. This is important for ensuring that alarm signals can reach monitoring stations reliably, even if one method fails. For example, a system might use a combination of a phone line and wireless transmission to send alerts. This redundancy increases the likelihood that alarms will be received promptly and can improve overall system reliability.

The other options do not accurately describe dual path communication. Using two different codes to operate the system pertains more to access control rather than communication methods, while using two different types of alarms does not imply any communication method. Additionally, utilizing multiple alarm systems simultaneously does not address the concept of having diverse communication pathways working in tandem to transmit signals effectively.