+1 for this, need remote power monitoring for second home. DSL is on battery backup. Many people in the area use 4G wireless which would also work in the case of power failure. Run on AC power, if power fails battery takes over. Need a status flag f…
What is needed is an alarm on the twine to detect the loss of external power. That plus temp monitoring makes it an ideal remote home monitor. Add in the mag switch and you have an alarm too.