I want to receive notifications about Power Failures - both when they start and end. To that end, here are some links to hardware that would assist in that endeavor.
Seeking Advice for DIY Power Failure Alert System Using Arduino/ESP32Cellular-Enabled Power Outage Detector w/ SMS Notifications5,000 mAh LiPo BatteryBlues - NotecardsCan I have backup power for an Arduino device?PowerBoost 500 Charger - Rechargeable 5V Lipo USB Boost @ 500mA+Adafruit Powerboost 1000C
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