On January 4, 2021 at 21:19 valdis.kletnieks@vt.edu (Valdis Klētnieks) wrote:
On Mon, 04 Jan 2021 15:33:10 -0500, bzs@theworld.com said:
Why wouldn't we just build this into 10-year battery smoke alarms, a simple radio receiver?
First, that means your smoke alarm batteries run down faster, which is a major issue.
That's the sort of argument I label "all sign, no magnitude". How much faster? If it took one minute of battery life off a 10 year battery would that be a problem? 30 minutes? How does that compare to other factors like ambient temperature which also affects battery life but we mostly consider "in the noise"? Could we make the battery just a little more powerful? How much power would a bit of circuitry waiting for a "turn on! there's a new message coming in!" need? etc.
I didn't bother thinking past that show-stopper, others can do so if they wish...
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