For what it’s worth, the American Red Cross is recommending installation of units that have 10-year lithium ion batteries which are sealed and not replaceable. History has shown that kids tend to remove the batteries for their toys and games.
They also say the test button tests only the battery, not the combustion-products detection circuitry. The circuitry in the older units (with replaceable batteries) proved to be effective only for five years. Any detector older than five years should be thrown away and replaced with the new 10-year design. 73, Kent K9ZTV > On Oct 30, 2020, at 3:01 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: > > The ones we have are stand-alone, running on a standard replaceable battery. > > 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
