Electronic Keyless Lock Function Entry with Key Override Access Method Proximity and Keypad Mounting Style Cylindrical Lock Material Zinc Alloy Finish Satin Chrome Series DL6100 Handle Type Lever Door Thickness 1-3/8 in to 1-7/8 in Key Override Options Small Format Interchangeable Core Hand Nonhanded Power Source (4) C Batteries Battery Life 5 yr Max User Codes 5000 Grade 1 Standards UL Listed Weather Resistant Yes Electrical Ligature Resistant No