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Does the Fire-Link system continue to operate even if there is a city-wide power failure?

April 26, 2017city-wide Continue failure fire-link operate power system

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Does the Fire-Link system continue to operate even if there is a city-wide power failure?

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Yes. Signaling over the power line will still continue uninterrupted. The NMC and each ISD has rechargeable battery backup rated for a minimum of 24 hours of standby power.