Power failure warning: If the user does not insert the card to respond when the warning reminds, when the remaining power is the user's agreed alarm power (or 10% of the current purchase power), the meter will switch off and display a "open switch" prompt At this time, insert the IC card into the card socket once and the power supply will be restored. If you can't find the IC card of this watch after the switch is opened, you can borrow the neighbor's IC card to insert it to restore the power supply.
Power purchase reminder: When the remaining power in the Three Phase Electric Meter is less than the "alarm power", the "alarm indicator" will always light up to remind.