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This European Standard specifies requirements and test methods for durability, strength, security, and functionality of mechanically operated locks and latches and their locking plates for use on doors, in buildings. This European standard covers locks and their locking plates which are either manufactured and placed on the market in their entirety by one producer or produced by more than one producer and subsequently placed on the marked separately or as a kit in a single transaction. This standard specifies locks and locking systems intended for use in different environmental and security conditions, thus necessitating different grades. This European standard does not specify Multipoint locks or their locking plates which are specified by prEN 15685. This standard specifies the dimensions and properties required for security and for the assessment of smoke door suitability. This European standard is not applicable to cylinders, handles, locks for windows, padlocks, locks for safes, furniture locks or prison locks. Assessment of the contribution of the product to the fire resistance of specific fire/smoke resisting door assemblies is beyond the scope of this European Standard.