All buttons of the energy meter can provide users a button and query their peak peak time, normal time and valley time power consumption, total power consumption of this month, and peak time of the previous month, power consumption of normal time and valley time. Total amount of electricity usage, total usage power, peak time of the previous month, time of peacetime, power consumption in valley, and amount of electricity used in last month. The instantaneous current value, the instantaneous voltage value, the voltage effective value, the current effective value, and the value of each periodic value can be queried. Therefore, the keyboard group has a peak time key (7eh), a normal time key (ob7h)<br>Valley time key (obbh), last month key (77h), last month (7dh), total power key (OBDH), instantaneous current key (OBBE), instantaneous voltage key (od7h), voltage effective key (oddh), current effective key (oddh), start time key (oebh), end time key (oedh), transmission key (ODH), period Query key (oe7h), cancel key (OEH).<br>
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