I bought the automatic belt winders, because my old after 5 years has given up the ghost (electrically broken) We have a heavy wooden blinds, but which is easily lifted with the Rollotron. Tip: the 9450 sun / twilight module (I had to buy 5 years ago) automatically lets in sunlight and at dusk down the blinds. In the database of Logitech Harmony remote control (for television, DVD, satellite receiver) will also find the commands for the 9450 Solar / twilight module and can then comfortably controlling it from your chair with the remote control the shutter.
