RolloTron Comfort 1700 belt winder - electric shutter drive with a lot of extra features The RolloTron Comfort belt winder is the convenient solution for electric and completely automatic shutter control. It fits into common belt boxes and can be made ready for use quickly and easily thanks to the installation wizard. It also delights people with a number of functions that make their everyday life easier. All the settings are presented clearly on the illuminated display You can use the buttons to control it on the spot. There is also the option of automation. This is possible on the basis of a daily or weekly schedule, or on the basis of the sunrise and sunset (astro programme). The ventilation and sun protection position can be determined to suit your individual requirements. The belt winder can optionally be connected to a sun and twilight sensor (see accessories) if it is to be controlled on the basis of the light level. Furthermore, the belt-winder has a soft-start/soft-stop functi