number devices.system.energyStart
Date and time since the last reset of the consumption counter. See .resetCumulativeConsumption() The property is read only!
string devices.system.energyStart
Value
The format is space separated date and time
YYYY-MM-DD hh:mm:ss
Usage
-- log voltage of the socket
logf("Measurment start: %s", devices.system.energyStart)