This is a smart IoT device <https://shop.yosmart.com/products/ys7106?variant=42759198474491&country=US¤cy=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&gad_source=1&gclid=CjwKCAiAt4C-BhBcEiwA8Kp0CZ4PovkNPisfISXMrIVukd795AgmTr7mS5ks6rw1vqD6LP-Ni2vO1BoC9PcQAvD_BwE> that you can plug into a utility grid-only outlet and it will alert you (through the separately purchased hub) in a variety of ways when the power goes out. You could even program it to turn on a light or an alarm buzzer using a smart relay and program the logic on the phone app. Once you have the hub and phone app installed there are a ton of other "smart" sensors and devices that work with the system. My off-grid home has gotten a lot smarter in the past couple of years! https://shop.yosmart.com/ <https://shop.yosmart.com/>
Eric On Thu, Feb 27, 2025 at 11:10 AM Richard Scott via RE-wrenches < [email protected]> wrote: > How about a relay powered by the AC grid with SPDT contact configuration. > Use normally closed contacts to close a circuit turning on a lamp or other > device powered off the backup AC power. > When the AC grid goes down, the relay de-energizes and closes the normally > closed contacts thereby turning on the indicator device. > > Richard > > On Thu, Feb 27, 2025 at 9:18 AM Nicholas Ponzio via RE-wrenches < > [email protected]> wrote: > >> Dear Esteemed Wrenches, >> >> This issue arises periodically, and I'm hopeful someone in the group has >> devised a cost-effective, low-power solution. >> >> For a whole-home backup system, how can we best alert homeowners that >> they are operating on battery power? These homeowners do not use >> smartphones and won't receive push notifications. Is there a simple >> solution to activate a single light or audible alarm exclusively when the >> grid is down? This particular instance involves a FranklinWH system, but >> the same challenge applies to any battery with a whole-home backup and >> "instant-on" transfer switch. >> >> Thank you in advance for your insights. >> >> Sincerely, >> Nicholas Ponzio >> Building Energy >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/[email protected]/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
