Electronic Lock, Function Classroom/ Storeroom, Access Method Keypad, Mounting Style Cylindrical, Lock Material Die Cast Metal, Finish Satin Chrome, Series CO100, Handle Type Lever, Door Thickness 1-3/4 in, Key Override Options Less Cylinder, Hand Nonhanded, Network Interface None, Outside Height 9 15/32 in, Outside Width 3 7/16 in, Outside Depth 3 49/64 in, Keypad Material ABS Plastic, Power Source (4) AA Batteries, Battery Life 2 yr, Operating Temp. Range -31 Degrees to 151 Degrees F