Medeco Security Locks has introduced M³ Logic, a Logic electronic cylinder platform that enables users to use just one key to control electronic cylinders within the same system as mechanical cylinders. The system allows for uncomplicated, rapid system changes. Features of the electronic cylinder include audit trails, scheduling, and the ability to efficiently add or delete users. The units require no wiring, door or frame modifications, or additional hardware since they are simply cylinder replacements. Ideal for both internal and external installation, the cylinders can be retrofitted into existing hardware in less than five minutes, nearly eliminating installation expense. The compact M³ Logic key is patent-protected against duplication, holds up to 1,000 audit events, features multiple time schedules, and incorporates both visible and audible status feedback. Variations of the M³ Logic platform include Biaxial Logic and Original Logic, which are compatible with older Medeco mechanical technology.