Wireless smoke alarms?
Hmmm.
That would be OK, as long as all models of these were on the same frequency.
And that those down the track are on the same frequency as well, the last thing we need is smoke alarms that won't "talk" to one another.
I'd imagine that things like this might be over a 2.4GHz network (like everything else "wireless" seems to be these days).
Are Wi-Fi devices in homes going to blank these signals out, or on the other side of the coin, are these things going to muck up peoples Wi-Fi signal to the degree that they will disable the detectors?
Just an "off the bat" thought.