Electronic GSM Lock

The electronic lock is intended for entrance doors of offices, houses, etc. The lock has the power supply unit of 12 V, the accumulator, the charger, the control unit and the SIM card of the client. The lock opens from phone call, the telephone numbers of inhabitants, clients, relatives, etc. which are in advance entered into the SIM card. From other phone numbers the lock does not open a door. The client enters into the SIM card or erases the necessary or unnecessary telephone numbers (Beeline, U Cell, Perfektum Mobile, etc.). During shutdown of electric energy the lock works from the accumulator and at emergence of electricity the charger recharges the accumulator.