How master keys, closers, exit devices and high-security access work together as a complete commercial system.
Start with a vulnerability review
Map public, employee, sensitive and emergency areas before selecting hardware.
Design a key hierarchy
Master-key levels reduce the number of keys while preserving restricted access.
Keep doors working
Closers, levers, panic hardware and strikes must operate reliably every day.
Add high-security controls where justified
Codes, cards and audit-friendly access can protect sensitive areas beyond a traditional key.
Need case-specific advice?
Lock and key systems vary by property, hardware, vehicle year and model. Call DY Locksmith with the details before purchasing replacement parts.