Electronic Classroom Lockdown Lock Function Programable Function Control Access Method RFID Mounting Style Mortise Lock Material Stainless Steel Finish Oil Rubbed Bronze Series 4000 Handle Type Clutched Lever Sentinel Door Thickness 1-3/4 in Key Override Options Interchangable Core Hand Field Reversible Outside Height 8 21/32 in Outside Width 3 27/64 in Outside Depth 2 3/4 in Keypad Material Not Applicable Power Source (4) AA Batteries Battery Life 1 to 2 yr