Electronic Keyless Lock Function Classroom with Key Override Access Method Keypad Mounting Style Mortise Lock Material Zinc Alloy Finish Brushed Chrome Series Trilogy Handle Type Lever Door Thickness 1-3/8 in to 1-7/8 in Key Override Options Schlage inC in Keyway (Included) Hand Left Network Interface None Outside Height 11 in Outside Width 3 1/4 in Outside Depth 3 in Keypad Material Metal Power Source (5) AA Batteries Battery Life 100 000 Cycles