Sistema de seguridad electronico que comprende un candado electronico, conformado por un cuerpo principal de cuerpo rectangular que tiene en su cara superior, un conector redondo de acoplamiento hembra, en sus caras laterales presenta cavidades para una llave mecanica cifrada, y en su cara inferior, tiene un receptaculo para herraje con tornillos de sujecion; dicho candado electronico, tiene en su interior, 2 selenoides que al ser activados liberan a los 2 tornillos de sujecion los cuales podran ser desatornillados por medio de una llave mecanica cifrada, ademas, cuenta con un circuito con microcontrolador programado con un codigo de proteccion, igual al que tiene la llave mecanica cifrada; una llave electronica, que proporciona la alimentacion necesaria para el funcionamiento del candado electronico, la cual contiene un segundo circuito del candado, para poder llevar acabo la activacion de los selenoides; la llave electronica esta conformada por un cuerpo principal sustancialmente rectangular, que tiene en su cara superior un led indicador de bateria, un led indicador de acceso y un boton de activacion, en una de sus caras laterales tiene un conector micro USB para carga y en su cara lateral opuesta, cuenta con un conector redondo, que se inserta en el conector redondo de acoplamiento hembra del candado electronico, de manera tal, que una vez acoplada la llave electronica en el candado electronico, esta se activa por medio del boton de activacion, y posteriormente se introduce la llave mecanica cifrada en ambas cavidades del candado electronico, para liberar los tornillos de sujecion y asi colocarlo en el herraje que se desee asegurar; una vez colocado el candado electronico en el lugar deseado, se desacopla la llave electronica y con la llave mecanica cifrada se giran los tornillos de sujecion para asegurar el herraje.Electronic security system comprising an electronic padlock, made up of a main body with a rectangular body that has on its upper face a round female coupling connector, on its side faces it has cavities for a coded mechanical key, and on its lower face, has a receptacle for hardware with fastening screws; Said electronic padlock, has inside, 2 selenoids that when activated release the 2 fastening screws which can be unscrewed by means of a coded mechanical key, in addition, it has a microcontroller circuit programmed with a protection code, the same as the one with the encrypted mechanical key; an electronic key, which provides the necessary power for the operation of the electronic lock, which contains a second circuit of the lock, to be able to carry out the activation of the selenoids; The electronic key is made up of a substantially rectangular main body, which has on its upper face a battery indicator LED, an access indicator LED and an activation button, on one of its side faces it has a micro USB connector for charging and on Its opposite side face has a round connector, which is inserted into the round female coupling connector of the electronic lock, in such a way that once the electronic key is attached to the electronic lock, it is activated by means of the activation button , and later the coded mechanical key is introduced in both cavities of the electronic padlock, to release the fastening screws and thus place it in the hardware that is to be secured; Once the electronic padlock has been placed in the desired place, the electronic key is uncoupled and with the coded mechanical key the fastening screws are turned to secure the hardware.