MASTER LOCK is the leader in the manufacturing of computerized Security Keys, Cylinders and Switches therefore we offer this product to condominium assemblies and/or to administrators to be able to immediately acquire the following benefits: Efficiently disables the unwanted traffics through halls and parking areas and limits access to only the proprietors. Avoids the presence of unauthorized people. Gives commodity to the user since only one or a few keys are needed to operate all mechanical and electrical locks of which he/she is authorized to use. Reduces the consumption of electricity and the cost of maintenance in elevators and electrical doors, in benefit for the users. We only deliver keys with the notification of the Condominium Assembly and/or administrator. This procedure also helps the payments to be on time. This product, once installed, has a one-year guarantee