Panasonic sf4c series ultra slim type 4 light curtains hand protection panasonic sf4c h28 this light curtain is a 28 beam device that provides a protective height of 560mm over an operating range of 01 to 3m and a minimum sensing object of oslash25mm the light curtain is part of the sf4c range of type 4 light curtains that combine high end machine safeguarding performance with an ultra slim enclosure that is easy to set up and use and does not involve any sacrifice in productivity the co