PRIMO GEN24 4.0Even an innovative system like the Fronius GEN24 constantly needs new impulses for improvement. As of now, the Primo and Symo series are available with the storage connection still deactivated at the factory. You decide for yourself whether and when you want to use this function by means of an activation code. Of course, they will continue to receive the familiar version with already enabled battery port distinguishable by the "plus" after the GEN24