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