What special UL standards are added for alarms that are monitored by internet only?

• A. CAT5 between internet module and router cannot exceed 12 feet, the router and internet module must be located in same room, must use a listed router
• B. CAT5 length is unrestricted, router not required
• C. Must use fiber optic between module and router
• D. Wireless monitoring only; no wired connections allowed

Answer: (A)

When alarms are monitored over the internet, the standard requires a controlled, wired path between the internet module and a router. The rule sets a short CAT5 run (maximum 12 feet) and requires that both devices be in the same room, using a listed router. This ensures a stable, secure communication path that is verifiable and protected by certified hardware. It also minimizes latency and potential tampering that could come with longer cable runs or unverified equipment. Fiber optic isn’t required in this scenario, since the standard specifies the copper CAT5 link and a listed router. Wireless-only monitoring isn’t allowed because the monitored path must be a defined wired connection to a certified router.