Solar sensor to control of RolloTron and Troll on the basis of the light level This light sensor is fixed to the window pane by a suction cup. It is compatible with various RolloTron belt winders and Troll timers; the connector is simply inserted into RolloTron or Troll. This allows the shutters to be controlled on the basis of the brightness of the ambient light. In the case of intense sunlight, the shutter is lowered down to the sensor. If the twilight function is selected, the shutter is lowered or raised when the programmed light level is achieved.
