Electronic Keyless Lock Function Entry with Key Override Access Method Proximity and Keypad Mounting Style Cylindrical Lock Material Zinc Finish Satin Chrome Series PDL3000 Handle Type Lever Door Thickness 1-3/8 in to 1-7/8 in Key Override Options Small Format Interchangeable Core Hand Nonhanded Outside Height 8 in Outside Width 3 1/4 in Outside Depth 2 9/16 in Power Source (5) AA Batteries Battery Life 60 000 Cycles Operating Temp Range -31 Degrees to 151 Degrees F