Electronic Keyless Lock Function Entry with Key Override Access Method Magnetic Strip Mounting Style Mortise Lock Material Stainless Steel Finish Satin Chrome Series MT Handle Type Lever Door Thickness 1-3/4 in to 2-1/8 in Key Override Options Small Format Interchangeable Core Hand Left Hand Reverse Outside Height 12 in Outside Width 7 in Outside Depth 4 in Power Source (4) AA Batteries Battery Life 2 yr Operating Temp Range -31 Degrees to 151 Degrees F