The integration time has the accuracy of the real-time clock, not the clock of the AD converter. This means that the uncertainty is +/- 0.02%.
When integration is manually stopped between a whole second count, the displayed data will be the last updated data. It will be held with the data up to 1 second ago.
Measure characteristics of devices that generate, transform or consume electricity. Also called power meters or wattmeters, these devices measure parameters such as true power (watts), power factor, harmonics, and efficiency.