I mentioned a while ago, fitting a lifting flap where boards cross a doorway. This has now been done and the flap, when up, rests against a metal alarm control box. Unfortunately, when resting, the flap is still perilously close to vertical. Fitting a neo magnet to the end (top) of the flap has solved the problem, in that the flap now clicks against the control box, and stays firmly upright.
Just to avoid paranoia, is there likely to be anything in the control box which may take a dislike to the magnet? The magnet has been in place for a few days, and no problems yet ...