The 9705 has replaced a very ancient predecessor with me who had died because of the heat death lengthy manipulations of defective shutters slats of large double shutter (had not thought of the KB-default). On my installation of the solar sensor operation is only required that actually luxurious menu control should be more satisfy the play instinct. It is structured as expected absolutely logical and intuitive, self-programming of the solar sensor worked because of the numerical measurement of light intensity at first.