Samsung SHS-2920 EX Smart Door Lock + 6 RF KeyTags, English Interface & Manual, Applicable Door Thickness 38-80mm RF Auto Polling Function Slim, Glossy and Trendy Design Full English Manual: User Manual, Installation Manual, Installation Template Guide 6 KeyTags included: 2 Keychain Type, 2 Sticker Type, 2 Card Type Door Thickness: Applicable 35-80 mm