The 52 Series is a stand-alone single combination access control lock with dual mode function that provides a small business or individual with the convenience of electronic lockins. 52 series has no time delay. For businesses that have multiple employee access,multiple locations, absentee ownership, or high employee turn-over are ideal for Auditcon locks.Auditcon locks can secure safes,containers,vaults,and restricted areas for Restaurants,ticket box offices, Convenience stores, Grocery stores, department Stores, Drug stores, Jewelry stores, Banks, Hospitals, Casinos, Police Stations,etc.