DDS102 single-phase electronic energy meter view: record the number and time displayed in the table, a few days or hours apart and then record the number and time in the table, the second recorded number minus the first recorded number, the number is the amount of electricity used in the interval (degrees), the most right with the red part of the decimal point after the number of degrees.

Electronic power meter is through the user power supply voltage and current real-time sampling, using a special power meter integrated circuit, the sampled voltage and current signals are processed and multiplied into a pulse output proportional to the electrical energy, through the meter or digital display.