Electronic Keyless Lock, Function Entry with Key Override, Access Method Keypad, Mounting Style Cylindrical, Lock Material Cast, Finish Satin Chrome, Series 28-KP, Handle Type Lever, Door Thickness 1-3/4 in, Key Override Options Sargent Interchangeable Cylinders, Hand Nonhanded, Outside Height 9 1/2 in, Outside Width 3 1/2 in, Outside Depth 2 1/2 in, Battery Life 40,000 Cycles, Operating Temp. Range 4 Degrees to 140 Degrees F, Max. User Codes 100, Grade 1, Standards ANSI Grade 1