2500 Series: Digital Rim Lock The revolutionary “Easy Code Change” Zone mechanical digital locks are robustly constructed and, if installed and maintained correctly, will give years of satisfactory service. Most problems associated with standard mechanical digital locks are caused by incorrect fitting of the code keys when changing codes. The “Easy Code Change” eliminates this problem as there are NO code pins to change. Code changing is achieved simply by turning a screwdriver through 180º for each code digit you wish to set. Note, these digital locks are not suitable for uPVC doors. General Specification  
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