Electronic Keyless Lock, Function Entry with Key Override, Access Method Keypad, Mounting Style Cylindrical, Lock Material Zinc, Finish Satin Chrome, Series E5700, Handle Type Lever, Door Thickness 1-3/8 in to 2-1/4 in, Key Override Options Best and Equivalents, Hand Nonhanded, Battery Life Up to 180,000 Cycles, Operating Temp. Range -4 Degrees to +130 Degrees F, Max. User Codes 100, Standards ANSI, ANSI Rated, BHMA Grade 1 Compliant, UL/ULC Fire Door Rating, Electrical