When you move into or buy a new home, no one hands you a guide to how the smoke detectors work. They "chirp," which really means shriek loudly, and you occasionally have to put new batteries in them.
The satellite smoke alarms in this MR31 system are larger and more dated than those in X-Sense’s petite FS31 system, but the addition of voice alerts adds extra peace of mind. X-Sense’s XS0B-MR31 ...
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