ELECTRICITY STEAL PREVENTING ELECTRIC METER

The utility model relates to an electricity steal preventing electric meter which is formed by the improvement of an existing electrical meter and an increased automatic controller; the automatic controller comprises a power supply circuit, a voltage sample circuit I, a voltage sample circuit II, a control circuit, an actuating mechanism and an optical signal alarm circuit; different voltage signal levels obtained from the voltage sample circuit are input to the control circuit, and the control circuit inputs working signals to the actuating mechanism and the optical signal alarm circuit according to the voltage signal levels of various combinations so as to realize the automatic control over the power supply of users consequently; the automatic controller are entirely enclosed inside the case of the electric meter; The utility model has the advantages of effective and reliable electricity steal preventing performance, small size, light weight, convenient installation and operation, long service life, and simple circuit; besides, the utility model can carry out automatic alarm of electricity stealing.