I have a Henderson electric roller door on my garage but have lost one of the two remote operating fobs. A new Henderson fob (if I can find one) is likely to cost around £50 but I have seen “clone” fobs at under £6. As I understand them, these simply clone the proper fob that I still have. I can’t see any reason why I should need two fobs with different codes and the “clone” fob appears to be all that I need. However, I would appreciate comments and advice if anyone has experience or knowledge of these things.