Electronic Keyless Lock Function Classroom or Store Room with Key Override Access Method Keypad Mounting Style Cylindrical Lock Material Metal Finish Satin Chrome Series AD200 Handle Type Lever Door Thickness 1-3/4 In. Key Override Options Schlage In.C in Keyway (Included) Hand Field Reversible Outside Height 12.38 In. Outside Width 3-1/2 In. Outside Depth 3-1/8 In. Power Source (4) AA Batteries Battery Life Up to 2 yr. Operating Temp Range -31 Degrees to 151 Degrees F