Electronic Keyless Lock, Function Office with Key Override, Access Method Keypad, Mounting Style Cylindrical, Lock Material Zinc Alloy, Finish Satin Chrome, Series DL2800, Handle Type Lever, Door Thickness 1-3/4 in, Key Override Options Standard SC1 Keyway, Hand Nonhanded, Outside Height 8 in, Outside Width 3 1/4 in, Outside Depth 2 9/16 in, Keypad Material Metal, Power Source (5) AA Batteries, Battery Life 100,000 Cycles, Operating Temp. Range -31 Degrees to 151 Degrees F, Max. User Codes 200