Kaba Simplex 91704 Auxiliary Lock with Thumbturn; Deadlocking Spring Latch with Latch Holdback for 1-3/8″ to 1-1/2″ Door Satin Brass Finish

• Mechanical Pushbutton Lock
• Eliminates Problems and Costs Associated with Issuing, Controlling and Collecting Keys and Cards
• Provides Fully Mechanical Access Control at All Times While Allowing Free Egress At All Times By Interior Thumbturn
• Deadbolt Models Must Be Manually Relocked; Spring Latch Models Automatically Relock Each Time Door Closes
• Fully Mechanical Lock Eliminates the Material and Labor Expense of Battery Replacements