Electronic Classroom Lockdown Lock Function Programable Function Control Access Method RFID Mounting Style Cylindrical Lock Material Stainless Steel Finish Satin Chrome Series 4000 Handle Type Rigid Lever Quest Door Thickness 1-3/4 in Key Override Options Interchangable Core Hand Field Reversible Outside Height 10 15/32 in Outside Width 3 27/64 in Outside Depth 2 11/16 in Keypad Material Not Applicable Power Source (4) AA Batteries Battery Life 1 to 2 yr