The model was designed to ignite and to die out automatically according to the external luminosity, it has a sensor which detects at the same time the darkness and the light and which will light or extinguish the lamp in function. If the reverberator does not receive sufficient solar radiation to charge the battery, the electronic system will extinguish one of the two lamps and if the reverberator still does not receive sufficient solar radiation to charge the battery, the second lamp will die out. This system petmet to protect the battery from excessive discharges which would leave it out of use.