Duplicate remotes or so-called Bluetooth remotes are designed to store the information of another remotely and act like that. Adding a remote to a parking door opener is a specialized task and requires planning a door opener, but copying one of the existing remote to a Bluetooth remote is a very quick and easy task that even the consumer himself without any expertise. Be able to do it. The only important thing to do is to keep the working frequency of the remote with the Bluetooth remote. Warning: High-security remote (hopping code) cannot be copied this way. So make sure the frequency of the remote and the hopping code before the Bluetooth remote is prepared.