Answer by  
                                                                                          thattractorguy (2970)
                                                            
                          
                          
                                                          Yes. It is a good system to use if you have multiple homes you use as rentals. This way you won't have to carry a key to get into every house. You can just use the master key to get in. It is a good idea to keep a copy of the regular key around to easily make copies.