looking for an arduino project that will monitor ac power. When power fails unit will key up a radio repeater every ten minutes and state a verbal message (on battery power) to a mic input circuit, for about ten seconds. Unit will auto reset upon return of ac power. Needed for radios that do not have a notification for this.
Use a relay powered off the mains . When the mains fails its contact will open - you can use that to show the mains gas failed
This may be of interest: big clive
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