The electronic bistable impulse relay allows you to switch on the lighting or other device from several different points by means of control buttons connected in parallel. The receivers are switched on after a current impulse caused by pressing any momentary (bell) button connected to the relay. The receivers will be switched off after the next pulse. The relay does not have a "memory" of the contact position, i.e. in the event of a power failure and its return, the relay contact will be switched off. This makes it impossible to automatically turn on the controlled receivers without supervision after a long-term power failure.