Your ODS control 10 works OK on small shutters but not on larger ones.
PLEASE NOTE: the White Smart Control 10 pictured on the left does not need to be replaced if the batteries have come to the end of their service life..The (Green) battery assembly on the right fits inside the control unit, it is supplied with a torx key (to remove the screw on the rear of the controller) and instructions. Very easy to fit! This battery fits all: Ozroll - Smart Drive, Control 10, ODS Control10 products including RF Remote Control as pictured above.