Electronic Keyless Lock Function Entry Access Method Keypad Mounting Style Mortise Lock Material Solid Cast Finish Satin Chrome Series E2000 Handle Type Lever Door Thickness 1-3/4 in to 2-1/4 in Key Override Options None Hand Nonhanded Outside Height 8 15/16 in Outside Width 3 5/16 in Outside Depth 2 3/16 in Keypad Material Solid Metal Power Source (3) AA Batteries Battery Life Up to 100 000 Cycles Operating Temp Range -31 Degrees to 151 Degrees F Indoor/Outdoor Approved