The electric belt winder. The RolloTron Basis is an electric belt winder for flush-mounted installation and is universally applicable, as it fits into any standard belt box starting from 36 mm in width. It is characterized by quick and easy installation. The setup and commissioning take about 10 minutes. Operation is via a Euro plug connection to the 230V power supply. These features ensure that retrofitting of the roller shutter control can be implemented at any time. The RolloTron Basis has a modern design with large buttons and is delivered in the color Ultra White. Equipped with a memory function (simple time function), it repeats programmed opening and closing times in a 24-hour cycle.