Left Hand Mechanical Pushbutton Exit Trim Lever Lock with Key Override; Best Prep Satin Chrome FiniFully Mechanical Lock Eliminates the Material and Labor Expense of Battery Replacements Rim Exit Device: Compatible with Most Leading Brands of Exit Devices Single Access CodeOne Easy to Manage Code for All Users Exit Device May Be "Dogged" Without Affecting the LP1000 Vandal Resistant, Solid Metal Pushbuttons