Out of the Blue

Two different smoke/CO₂ detectors in the BlueTower are chirping low battery warnings, so I've decided it's time to upgrade the entire place. There are sealed units where the battery lasts 10 years, which is appealing. I figured I'd mention this here in case anyone has any expertise on the right way to go. I'm looking to replace five units, and I see that there are models now that communicate with each other. This seems like a smart way to ensure being properly notified in case there's a problem. But maybe it's just a useless gimmick? Does anyone have experience or recommendations to share on these? This is one of those projects that one doesn't think about on a day-to-day basis, so I'd like to make a wise decision while it's on the front burner. Or maybe these detectors are fairly generic at this point and I shouldn't over think it?

Smokey Round-up
Thanks Ant and Neutronbeam.


Thanks Max.