[abridges6523]

The upside is not relying on telecommunications, but the downside is one trip and they don’t trip again until they are manually reset by a tech.

[gumby]

Presumably at least one fire truck shows up so they can reset it.

[abridges6523]

In some cities including Boston itself, it’s not the Fd that resets it but the fire alarm company of record(I work for one) who also gets a call. The possible issue is if another alarm comes in before the tech arrives it will not report to the FD again.