Ductape wrote:
What about a small LED lamp before the UPS and a cheap webcam after the UPS? Light goes off, webcam sends message.
How does the webcam send a message w/o power for your router, monthly cell phone plan?
It seems like something that could be simply solved with an android or Pi box. Short term UPS for the modem/router and an android device (ie old phone w/o sim) on your home wifi plugged directly into the wall, when android detects it's been unplugged, send an email, send another one when it's back on power.